/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:21:53,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:21:53,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:21:54,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:21:54,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:21:54,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:21:54,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:21:54,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:21:54,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:21:54,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:21:54,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:21:54,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:21:54,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:21:54,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:21:54,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:21:54,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:21:54,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:21:54,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:21:54,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:21:54,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:21:54,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:21:54,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:21:54,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:21:54,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:21:54,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:21:54,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:21:54,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:21:54,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:21:54,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:21:54,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:21:54,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:21:54,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:21:54,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:21:54,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:21:54,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:21:54,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:21:54,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:21:54,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:21:54,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:21:54,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:21:54,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:21:54,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:21:54,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:21:54,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:21:54,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:21:54,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:21:54,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:21:54,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:21:54,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:21:54,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:21:54,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:21:54,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:21:54,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:21:54,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:21:54,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:21:54,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:21:54,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:21:54,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:21:54,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:21:54,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:21:54,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:21:54,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:21:54,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:21:54,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:21:54,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:21:54,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:21:54,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:21:54,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:21:54,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:21:54,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:21:54,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:21:54,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:21:54,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:21:54,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:21:54,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:21:54,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:21:54,517 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:21:54,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2020-10-14 23:21:54,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba940bb8/a1c52ee18057480cb9c5c1d49b247a06/FLAGbe77a2962 [2020-10-14 23:21:55,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:21:55,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2020-10-14 23:21:55,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba940bb8/a1c52ee18057480cb9c5c1d49b247a06/FLAGbe77a2962 [2020-10-14 23:21:55,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba940bb8/a1c52ee18057480cb9c5c1d49b247a06 [2020-10-14 23:21:55,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:21:55,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:21:55,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:21:55,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:21:55,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:21:55,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:21:55" (1/1) ... [2020-10-14 23:21:55,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c975714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:55, skipping insertion in model container [2020-10-14 23:21:55,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:21:55" (1/1) ... [2020-10-14 23:21:55,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:21:55,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:21:55,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:21:55,947 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:21:55,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:21:56,050 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:21:56,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56 WrapperNode [2020-10-14 23:21:56,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:21:56,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:21:56,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:21:56,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:21:56,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... [2020-10-14 23:21:56,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:21:56,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:21:56,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:21:56,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:21:56,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:21:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:21:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:21:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:21:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:21:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:21:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:21:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:21:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:21:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:21:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:21:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:21:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:21:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:21:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:21:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:21:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:21:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:21:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:21:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:21:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:21:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:21:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:21:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:21:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:21:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:21:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:21:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:21:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:21:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:21:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:21:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:21:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:21:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:21:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:21:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:21:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:21:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:21:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:21:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:21:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:21:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:21:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:21:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:21:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:21:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:21:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:21:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:21:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:21:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:21:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:21:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:21:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:21:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:21:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:21:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:21:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:21:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:21:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:21:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:21:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:21:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:21:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:21:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:21:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:21:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:21:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:21:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:21:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:21:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:21:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:21:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:21:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:21:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:21:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:21:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:21:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:21:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:21:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:21:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:21:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:21:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:21:56,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:21:56,722 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 23:21:56,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:21:56 BoogieIcfgContainer [2020-10-14 23:21:56,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:21:56,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:21:56,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:21:56,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:21:56,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:21:55" (1/3) ... [2020-10-14 23:21:56,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2777f1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:21:56, skipping insertion in model container [2020-10-14 23:21:56,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:56" (2/3) ... [2020-10-14 23:21:56,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2777f1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:21:56, skipping insertion in model container [2020-10-14 23:21:56,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:21:56" (3/3) ... [2020-10-14 23:21:56,735 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2020-10-14 23:21:56,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:21:56,753 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 23:21:56,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 23:21:56,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:21:56,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:21:56,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:21:56,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:21:56,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:21:56,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:21:56,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:21:56,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:21:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 23:21:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:21:56,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:56,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:56,821 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:56,828 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-10-14 23:21:56,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:56,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430146758] [2020-10-14 23:21:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:21:57,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 23:21:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:21:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:21:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:21:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:57,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:21:57,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:57,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430146758] [2020-10-14 23:21:57,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:57,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:21:57,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908335212] [2020-10-14 23:21:57,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:21:57,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:57,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:21:57,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:21:57,428 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-14 23:21:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:57,623 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2020-10-14 23:21:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:21:57,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:21:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:57,635 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:21:57,636 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 23:21:57,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 23:21:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-10-14 23:21:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:21:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 23:21:57,678 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2020-10-14 23:21:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:57,679 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 23:21:57,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:21:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 23:21:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:21:57,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:57,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:57,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:21:57,681 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:57,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-10-14 23:21:57,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:57,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685118524] [2020-10-14 23:21:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:21:57,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 23:21:57,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:21:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:21:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:21:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:57,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685118524] [2020-10-14 23:21:57,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:57,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:21:57,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844662309] [2020-10-14 23:21:57,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:21:57,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:57,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:21:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:57,940 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-14 23:21:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:58,133 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-14 23:21:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:58,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 23:21:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:58,135 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:21:58,135 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:21:58,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:21:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-10-14 23:21:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 23:21:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-14 23:21:58,145 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-10-14 23:21:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:58,146 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-14 23:21:58,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:21:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-14 23:21:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:21:58,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:58,147 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:58,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:21:58,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-10-14 23:21:58,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:58,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146055331] [2020-10-14 23:21:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:58,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:21:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 23:21:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:58,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:21:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:21:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:58,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:21:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:58,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:58,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146055331] [2020-10-14 23:21:58,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:58,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:21:58,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221728910] [2020-10-14 23:21:58,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:21:58,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:58,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:21:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:58,804 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-10-14 23:21:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:59,060 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-14 23:21:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:59,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-14 23:21:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:59,061 INFO L225 Difference]: With dead ends: 39 [2020-10-14 23:21:59,062 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 23:21:59,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 23:21:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-14 23:21:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 23:21:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-14 23:21:59,074 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-14 23:21:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:59,074 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-14 23:21:59,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:21:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-14 23:21:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:21:59,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:59,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:59,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:21:59,077 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:59,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-10-14 23:21:59,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:59,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359112620] [2020-10-14 23:21:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:59,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:21:59,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 23:21:59,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:59,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:21:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:21:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:59,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:59,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:59,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:59,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359112620] [2020-10-14 23:21:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:59,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:21:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945117364] [2020-10-14 23:21:59,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:21:59,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:21:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:59,373 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-10-14 23:21:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:59,498 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-14 23:21:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:59,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 23:21:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:59,500 INFO L225 Difference]: With dead ends: 62 [2020-10-14 23:21:59,500 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:21:59,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:21:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-14 23:21:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:21:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 23:21:59,509 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-10-14 23:21:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:59,509 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 23:21:59,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:21:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 23:21:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:21:59,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:59,511 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:59,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:21:59,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:59,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-10-14 23:21:59,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:59,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535917680] [2020-10-14 23:21:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:59,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:21:59,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 23:21:59,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:59,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:21:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:21:59,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:59,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:59,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:59,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:59,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:59,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:59,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535917680] [2020-10-14 23:21:59,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:59,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:21:59,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945022781] [2020-10-14 23:21:59,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:21:59,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:59,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:21:59,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:59,708 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-14 23:21:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:59,878 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-14 23:21:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:59,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 23:21:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:59,880 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:21:59,880 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 23:21:59,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 23:21:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 23:21:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:21:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 23:21:59,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-10-14 23:21:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:59,887 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 23:21:59,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:21:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 23:21:59,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:21:59,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:59,888 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:59,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:21:59,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:59,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times [2020-10-14 23:21:59,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:59,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379089427] [2020-10-14 23:21:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:00,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:22:00,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-14 23:22:00,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:00,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:22:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:22:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:22:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:00,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379089427] [2020-10-14 23:22:00,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:00,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:22:00,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292301711] [2020-10-14 23:22:00,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:22:00,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:22:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:22:00,708 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-10-14 23:22:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:00,996 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-14 23:22:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:22:00,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-14 23:22:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:00,998 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:22:00,998 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:22:00,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:22:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:22:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2020-10-14 23:22:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:22:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 23:22:01,005 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-10-14 23:22:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:01,006 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 23:22:01,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:22:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 23:22:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:22:01,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:01,008 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:01,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:22:01,008 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 108390666, now seen corresponding path program 1 times [2020-10-14 23:22:01,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:01,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441770507] [2020-10-14 23:22:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:01,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:01,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:22:01,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-14 23:22:01,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:01,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:22:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:22:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:01,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:01,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:01,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:01,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:01,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:01,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:01,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441770507] [2020-10-14 23:22:01,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:01,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:22:01,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088542872] [2020-10-14 23:22:01,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:22:01,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:22:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:22:01,734 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-14 23:22:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:01,949 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-10-14 23:22:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:22:01,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-14 23:22:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:01,950 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:22:01,950 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 23:22:01,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 23:22:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-14 23:22:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:22:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 23:22:01,956 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 24 [2020-10-14 23:22:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:01,956 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 23:22:01,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:22:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 23:22:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:22:01,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:01,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:01,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:22:01,957 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:01,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:01,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-10-14 23:22:01,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:01,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073659866] [2020-10-14 23:22:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:02,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:02,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:22:02,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 23:22:02,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:02,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:22:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:22:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:02,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:02,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:02,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073659866] [2020-10-14 23:22:02,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:02,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:22:02,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631543855] [2020-10-14 23:22:02,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:22:02,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:02,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:22:02,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:22:02,295 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-10-14 23:22:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:02,688 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2020-10-14 23:22:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:22:02,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 23:22:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:02,690 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:22:02,690 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 23:22:02,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 23:22:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 46. [2020-10-14 23:22:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:22:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-14 23:22:02,698 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-10-14 23:22:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:02,698 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-14 23:22:02,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:22:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-14 23:22:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:22:02,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:02,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:02,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:22:02,700 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-10-14 23:22:02,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:02,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255991423] [2020-10-14 23:22:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:02,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:02,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:22:02,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:02,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 23:22:02,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:02,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:22:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:22:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:03,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:22:03,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:03,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255991423] [2020-10-14 23:22:03,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:03,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:22:03,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924206499] [2020-10-14 23:22:03,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:22:03,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:03,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:22:03,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:22:03,083 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 9 states. [2020-10-14 23:22:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:03,471 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 23:22:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:22:03,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 23:22:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:03,474 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:22:03,474 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 23:22:03,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 23:22:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-14 23:22:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:22:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-14 23:22:03,483 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-10-14 23:22:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:03,484 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-14 23:22:03,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:22:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-14 23:22:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:22:03,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:03,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:03,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:22:03,486 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:03,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-10-14 23:22:03,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:03,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109825042] [2020-10-14 23:22:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:22:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:22:03,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:22:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:22:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:04,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:04,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:04,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:04,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:04,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:04,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109825042] [2020-10-14 23:22:04,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:04,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:22:04,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817063757] [2020-10-14 23:22:04,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:22:04,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:04,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:22:04,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:22:04,073 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2020-10-14 23:22:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:04,540 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-10-14 23:22:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:04,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 23:22:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:04,542 INFO L225 Difference]: With dead ends: 82 [2020-10-14 23:22:04,542 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:22:04,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:22:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-10-14 23:22:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:22:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-14 23:22:04,551 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 27 [2020-10-14 23:22:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:04,551 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-14 23:22:04,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:22:04,551 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-14 23:22:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:22:04,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:04,552 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:04,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:22:04,553 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1670120370, now seen corresponding path program 2 times [2020-10-14 23:22:04,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:04,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499353210] [2020-10-14 23:22:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:04,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:22:04,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-14 23:22:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:04,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:22:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:22:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:05,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:05,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:05,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:05,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:05,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:05,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499353210] [2020-10-14 23:22:05,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:05,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:22:05,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171175628] [2020-10-14 23:22:05,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:22:05,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:22:05,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:22:05,144 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 9 states. [2020-10-14 23:22:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:05,513 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-14 23:22:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:22:05,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-14 23:22:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:05,514 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:22:05,514 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:22:05,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:22:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2020-10-14 23:22:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:22:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-14 23:22:05,522 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 27 [2020-10-14 23:22:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:05,523 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-14 23:22:05,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:22:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-14 23:22:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:22:05,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:05,524 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:05,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:22:05,525 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:05,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1148340406, now seen corresponding path program 3 times [2020-10-14 23:22:05,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:05,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839324663] [2020-10-14 23:22:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:05,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:22:05,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 23:22:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:05,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:22:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:22:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:06,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:06,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:06,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:06,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839324663] [2020-10-14 23:22:06,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:06,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:06,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562528733] [2020-10-14 23:22:06,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:06,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:06,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:06,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:06,144 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 11 states. [2020-10-14 23:22:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:06,671 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2020-10-14 23:22:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:06,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-14 23:22:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:06,673 INFO L225 Difference]: With dead ends: 95 [2020-10-14 23:22:06,673 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:22:06,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:22:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-10-14 23:22:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 23:22:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-14 23:22:06,690 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 27 [2020-10-14 23:22:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:06,691 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-14 23:22:06,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-14 23:22:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:22:06,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:06,692 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:06,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:22:06,692 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:06,693 INFO L82 PathProgramCache]: Analyzing trace with hash 18823372, now seen corresponding path program 2 times [2020-10-14 23:22:06,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:06,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996798135] [2020-10-14 23:22:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:22:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 23:22:07,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:22:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:22:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:07,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:07,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:07,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996798135] [2020-10-14 23:22:07,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:07,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:22:07,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867388335] [2020-10-14 23:22:07,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:22:07,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:22:07,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:22:07,183 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 9 states. [2020-10-14 23:22:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:07,551 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-14 23:22:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:22:07,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-14 23:22:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:07,553 INFO L225 Difference]: With dead ends: 80 [2020-10-14 23:22:07,553 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:22:07,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:22:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-14 23:22:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:22:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-14 23:22:07,575 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 27 [2020-10-14 23:22:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:07,576 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-14 23:22:07,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:22:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-14 23:22:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:22:07,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:07,578 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:07,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:22:07,578 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:07,584 INFO L82 PathProgramCache]: Analyzing trace with hash 798514594, now seen corresponding path program 2 times [2020-10-14 23:22:07,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:07,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213414501] [2020-10-14 23:22:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:08,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:08,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:22:08,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-14 23:22:08,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:08,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:08,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:08,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:08,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:08,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:08,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:08,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213414501] [2020-10-14 23:22:08,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:08,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:22:08,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25372333] [2020-10-14 23:22:08,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:22:08,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:08,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:22:08,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:22:08,426 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 12 states. [2020-10-14 23:22:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:09,021 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2020-10-14 23:22:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:09,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-14 23:22:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:09,022 INFO L225 Difference]: With dead ends: 96 [2020-10-14 23:22:09,023 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 23:22:09,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:22:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 23:22:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2020-10-14 23:22:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:22:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-14 23:22:09,033 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 30 [2020-10-14 23:22:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:09,034 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-14 23:22:09,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:22:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-14 23:22:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:22:09,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:09,035 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:09,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:22:09,036 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1913600758, now seen corresponding path program 4 times [2020-10-14 23:22:09,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:09,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494730010] [2020-10-14 23:22:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:09,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:10,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:22:10,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-14 23:22:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:10,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:22:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:22:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:10,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:10,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:10,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494730010] [2020-10-14 23:22:10,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:10,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:10,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898738675] [2020-10-14 23:22:10,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:10,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:10,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:10,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:10,699 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 11 states. [2020-10-14 23:22:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:11,256 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-10-14 23:22:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:11,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:22:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:11,258 INFO L225 Difference]: With dead ends: 117 [2020-10-14 23:22:11,258 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:22:11,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:22:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2020-10-14 23:22:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:22:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-14 23:22:11,269 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 30 [2020-10-14 23:22:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:11,270 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-14 23:22:11,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-14 23:22:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:22:11,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:11,271 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:11,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:22:11,271 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:11,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:11,271 INFO L82 PathProgramCache]: Analyzing trace with hash 579659876, now seen corresponding path program 1 times [2020-10-14 23:22:11,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:11,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963405267] [2020-10-14 23:22:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:11,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:11,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:22:11,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 23:22:11,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:11,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:22:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:22:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:11,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:11,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:11,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:11,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:11,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963405267] [2020-10-14 23:22:11,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:11,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:11,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425899968] [2020-10-14 23:22:11,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:11,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:11,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:11,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:11,824 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 11 states. [2020-10-14 23:22:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:12,252 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-10-14 23:22:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:12,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:22:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:12,253 INFO L225 Difference]: With dead ends: 98 [2020-10-14 23:22:12,253 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:22:12,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:22:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2020-10-14 23:22:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:22:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-14 23:22:12,261 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 30 [2020-10-14 23:22:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:12,261 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-14 23:22:12,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-14 23:22:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:22:12,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:12,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:12,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:22:12,263 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:12,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1694746040, now seen corresponding path program 1 times [2020-10-14 23:22:12,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:12,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417229707] [2020-10-14 23:22:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:12,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:12,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:22:12,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 23:22:12,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:12,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:22:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:22:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:12,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:12,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:12,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:12,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:12,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:12,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417229707] [2020-10-14 23:22:12,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:12,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:12,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597445176] [2020-10-14 23:22:12,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:12,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:12,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:12,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:12,754 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 11 states. [2020-10-14 23:22:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:13,375 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2020-10-14 23:22:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:13,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:22:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:13,376 INFO L225 Difference]: With dead ends: 154 [2020-10-14 23:22:13,377 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 23:22:13,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:13,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 23:22:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 89. [2020-10-14 23:22:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 23:22:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2020-10-14 23:22:13,394 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 30 [2020-10-14 23:22:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:13,395 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2020-10-14 23:22:13,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2020-10-14 23:22:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:22:13,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:13,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:13,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:22:13,397 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:13,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:13,397 INFO L82 PathProgramCache]: Analyzing trace with hash -911277514, now seen corresponding path program 3 times [2020-10-14 23:22:13,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:13,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347805181] [2020-10-14 23:22:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:13,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:13,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:13,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:22:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 23:22:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:13,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:22:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:22:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:13,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:13,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:13,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:13,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:13,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347805181] [2020-10-14 23:22:13,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:13,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:13,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890736837] [2020-10-14 23:22:13,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:13,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:13,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:13,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:13,936 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 11 states. [2020-10-14 23:22:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:14,397 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-10-14 23:22:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:14,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:22:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:14,398 INFO L225 Difference]: With dead ends: 146 [2020-10-14 23:22:14,398 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 23:22:14,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 23:22:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2020-10-14 23:22:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:22:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2020-10-14 23:22:14,412 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2020-10-14 23:22:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:14,412 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2020-10-14 23:22:14,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2020-10-14 23:22:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:22:14,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:14,413 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:14,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:22:14,414 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash 499848564, now seen corresponding path program 1 times [2020-10-14 23:22:14,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:14,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97902829] [2020-10-14 23:22:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:22:14,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 23:22:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:14,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:22:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:22:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:14,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:14,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:14,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97902829] [2020-10-14 23:22:14,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:14,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:22:14,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477900305] [2020-10-14 23:22:14,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:22:14,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:14,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:22:14,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:22:14,840 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 10 states. [2020-10-14 23:22:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:15,236 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-10-14 23:22:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:22:15,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:22:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:15,238 INFO L225 Difference]: With dead ends: 130 [2020-10-14 23:22:15,238 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 23:22:15,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 23:22:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-14 23:22:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:22:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-10-14 23:22:15,248 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 32 [2020-10-14 23:22:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:15,249 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-10-14 23:22:15,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:22:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-10-14 23:22:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:22:15,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:15,250 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:15,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:22:15,250 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -862405126, now seen corresponding path program 3 times [2020-10-14 23:22:15,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:15,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635472281] [2020-10-14 23:22:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:15,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:15,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:22:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-14 23:22:15,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:15,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:22:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:16,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:16,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:16,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:16,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:16,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:16,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635472281] [2020-10-14 23:22:16,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:16,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:16,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570927188] [2020-10-14 23:22:16,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:16,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:16,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:16,383 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 14 states. [2020-10-14 23:22:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:16,985 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2020-10-14 23:22:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:16,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-14 23:22:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:16,987 INFO L225 Difference]: With dead ends: 120 [2020-10-14 23:22:16,987 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:22:16,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:22:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2020-10-14 23:22:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:22:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-14 23:22:16,997 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2020-10-14 23:22:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:16,997 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-14 23:22:16,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-14 23:22:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:22:16,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:16,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:16,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:22:16,999 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash 842705248, now seen corresponding path program 2 times [2020-10-14 23:22:16,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:17,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756642814] [2020-10-14 23:22:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:17,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:22:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:22:17,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:17,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:22:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:17,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:17,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:17,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:17,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:17,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:17,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756642814] [2020-10-14 23:22:17,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:17,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:22:17,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831727660] [2020-10-14 23:22:17,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:22:17,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:17,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:22:17,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:22:17,517 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 12 states. [2020-10-14 23:22:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:18,196 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2020-10-14 23:22:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:22:18,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 23:22:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:18,199 INFO L225 Difference]: With dead ends: 114 [2020-10-14 23:22:18,200 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 23:22:18,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 23:22:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 85. [2020-10-14 23:22:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 23:22:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-10-14 23:22:18,217 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 33 [2020-10-14 23:22:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:18,218 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-10-14 23:22:18,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:22:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-10-14 23:22:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:22:18,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:18,220 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:18,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:22:18,220 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:18,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1957791412, now seen corresponding path program 2 times [2020-10-14 23:22:18,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:18,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263668470] [2020-10-14 23:22:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:19,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:19,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:22:19,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-14 23:22:19,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:19,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:22:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:22:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:19,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:19,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:19,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:19,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:19,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:19,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263668470] [2020-10-14 23:22:19,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:19,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:19,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232769711] [2020-10-14 23:22:19,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:19,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:19,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:19,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:19,398 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 11 states. [2020-10-14 23:22:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:20,240 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-14 23:22:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:20,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:22:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:20,243 INFO L225 Difference]: With dead ends: 119 [2020-10-14 23:22:20,243 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 23:22:20,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 23:22:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2020-10-14 23:22:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 23:22:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-14 23:22:20,251 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 33 [2020-10-14 23:22:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:20,251 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-14 23:22:20,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-14 23:22:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:22:20,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:20,252 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:20,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:22:20,253 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:20,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:20,253 INFO L82 PathProgramCache]: Analyzing trace with hash 112132428, now seen corresponding path program 3 times [2020-10-14 23:22:20,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:20,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664486638] [2020-10-14 23:22:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:20,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:22:20,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-14 23:22:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:20,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:22:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:21,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:21,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664486638] [2020-10-14 23:22:21,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:21,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:21,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273722046] [2020-10-14 23:22:21,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:21,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:21,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:21,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:21,028 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 13 states. [2020-10-14 23:22:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:21,720 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2020-10-14 23:22:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:22:21,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 23:22:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:21,722 INFO L225 Difference]: With dead ends: 132 [2020-10-14 23:22:21,722 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 23:22:21,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:22:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 23:22:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 89. [2020-10-14 23:22:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 23:22:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-14 23:22:21,744 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 33 [2020-10-14 23:22:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:21,744 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-14 23:22:21,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-14 23:22:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:22:21,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:21,745 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:21,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:22:21,745 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1738936694, now seen corresponding path program 4 times [2020-10-14 23:22:21,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:21,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738191457] [2020-10-14 23:22:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:22:22,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-14 23:22:22,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:22,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:22:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:22:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:22,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:22,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:22,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:22,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738191457] [2020-10-14 23:22:22,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:22,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:22:22,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792103085] [2020-10-14 23:22:22,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:22:22,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:22,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:22:22,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:22:22,338 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 11 states. [2020-10-14 23:22:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:22,768 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-10-14 23:22:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:22:22,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:22:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:22,770 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:22:22,770 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:22:22,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:22:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-14 23:22:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:22:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-14 23:22:22,779 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 33 [2020-10-14 23:22:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:22,780 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-14 23:22:22,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:22:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-14 23:22:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:22:22,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:22,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:22:22,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:22:22,781 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2083831756, now seen corresponding path program 2 times [2020-10-14 23:22:22,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:22,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651201424] [2020-10-14 23:22:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:23,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:23,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:22:23,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:23,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 23:22:23,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:23,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:22:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:23,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651201424] [2020-10-14 23:22:23,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:23,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:23,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524224292] [2020-10-14 23:22:23,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:23,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:23,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:23,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:23,590 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 13 states. [2020-10-14 23:22:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:24,569 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2020-10-14 23:22:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:22:24,569 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-14 23:22:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:24,570 INFO L225 Difference]: With dead ends: 208 [2020-10-14 23:22:24,571 INFO L226 Difference]: Without dead ends: 206 [2020-10-14 23:22:24,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:22:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-14 23:22:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 111. [2020-10-14 23:22:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 23:22:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-10-14 23:22:24,586 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 35 [2020-10-14 23:22:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:24,587 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-10-14 23:22:24,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-10-14 23:22:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:22:24,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:24,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:24,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:22:24,588 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:24,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2077122034, now seen corresponding path program 1 times [2020-10-14 23:22:24,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:24,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121237956] [2020-10-14 23:22:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:24,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:24,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:22:24,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 23:22:24,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:24,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:25,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:25,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:25,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:25,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:25,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:25,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121237956] [2020-10-14 23:22:25,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:25,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:25,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845467825] [2020-10-14 23:22:25,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:25,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:25,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:25,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:25,378 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 13 states. [2020-10-14 23:22:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:26,212 INFO L93 Difference]: Finished difference Result 189 states and 209 transitions. [2020-10-14 23:22:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:22:26,212 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-14 23:22:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:26,214 INFO L225 Difference]: With dead ends: 189 [2020-10-14 23:22:26,214 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 23:22:26,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:22:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 23:22:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-14 23:22:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 23:22:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 165 transitions. [2020-10-14 23:22:26,227 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 165 transitions. Word has length 35 [2020-10-14 23:22:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:26,227 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 165 transitions. [2020-10-14 23:22:26,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 165 transitions. [2020-10-14 23:22:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:22:26,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:26,228 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:26,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:22:26,229 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash -943401652, now seen corresponding path program 3 times [2020-10-14 23:22:26,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:26,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834678554] [2020-10-14 23:22:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:26,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:26,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:26,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-14 23:22:26,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:26,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:26,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:27,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:27,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:27,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:27,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:27,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:27,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:27,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:27,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:27,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:27,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834678554] [2020-10-14 23:22:27,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:27,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:27,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942519021] [2020-10-14 23:22:27,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:27,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:27,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:27,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:27,429 INFO L87 Difference]: Start difference. First operand 148 states and 165 transitions. Second operand 14 states. [2020-10-14 23:22:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:28,404 INFO L93 Difference]: Finished difference Result 201 states and 225 transitions. [2020-10-14 23:22:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:22:28,407 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 23:22:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:28,408 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:22:28,408 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 23:22:28,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 23:22:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 165. [2020-10-14 23:22:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:22:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-14 23:22:28,425 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 36 [2020-10-14 23:22:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:28,425 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-14 23:22:28,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-14 23:22:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:22:28,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:28,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:28,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:22:28,426 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash 171684512, now seen corresponding path program 4 times [2020-10-14 23:22:28,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:28,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722048599] [2020-10-14 23:22:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:29,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:29,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:29,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-14 23:22:29,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:29,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:22:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:30,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:30,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:30,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722048599] [2020-10-14 23:22:30,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:30,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:30,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553878845] [2020-10-14 23:22:30,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:30,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:30,177 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 13 states. [2020-10-14 23:22:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:30,794 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2020-10-14 23:22:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:22:30,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 23:22:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:30,797 INFO L225 Difference]: With dead ends: 216 [2020-10-14 23:22:30,797 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 23:22:30,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 23:22:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 168. [2020-10-14 23:22:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-14 23:22:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-10-14 23:22:30,830 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 36 [2020-10-14 23:22:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:30,831 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-10-14 23:22:30,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-10-14 23:22:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:22:30,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:30,832 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:30,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:22:30,832 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1083950262, now seen corresponding path program 4 times [2020-10-14 23:22:30,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:30,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101695682] [2020-10-14 23:22:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:31,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 23:22:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:22:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:31,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101695682] [2020-10-14 23:22:31,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:31,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:31,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38744177] [2020-10-14 23:22:31,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:31,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:31,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:31,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:31,606 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 13 states. [2020-10-14 23:22:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:32,176 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2020-10-14 23:22:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:32,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 23:22:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:32,182 INFO L225 Difference]: With dead ends: 211 [2020-10-14 23:22:32,183 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:22:32,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:22:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-10-14 23:22:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 23:22:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 182 transitions. [2020-10-14 23:22:32,195 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 182 transitions. Word has length 36 [2020-10-14 23:22:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:32,195 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 182 transitions. [2020-10-14 23:22:32,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 182 transitions. [2020-10-14 23:22:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:32,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:32,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:32,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:22:32,196 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash -21461300, now seen corresponding path program 1 times [2020-10-14 23:22:32,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:32,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830177246] [2020-10-14 23:22:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 23:22:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:32,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:22:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:33,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:33,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:33,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830177246] [2020-10-14 23:22:33,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:33,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:33,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529218552] [2020-10-14 23:22:33,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:33,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:33,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:33,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:33,037 INFO L87 Difference]: Start difference. First operand 163 states and 182 transitions. Second operand 14 states. [2020-10-14 23:22:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:34,191 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2020-10-14 23:22:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:22:34,191 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-14 23:22:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:34,193 INFO L225 Difference]: With dead ends: 214 [2020-10-14 23:22:34,193 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 23:22:34,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:22:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 23:22:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 171. [2020-10-14 23:22:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 23:22:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2020-10-14 23:22:34,210 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 38 [2020-10-14 23:22:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:34,210 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2020-10-14 23:22:34,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2020-10-14 23:22:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:34,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:34,211 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:34,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:22:34,212 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:34,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1093624864, now seen corresponding path program 3 times [2020-10-14 23:22:34,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:34,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095184857] [2020-10-14 23:22:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:35,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:35,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:35,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:35,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-14 23:22:35,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:35,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:35,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:35,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:35,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:35,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:35,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:35,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095184857] [2020-10-14 23:22:35,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:35,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:35,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023251737] [2020-10-14 23:22:35,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:35,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:35,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:35,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:35,686 INFO L87 Difference]: Start difference. First operand 171 states and 191 transitions. Second operand 13 states. [2020-10-14 23:22:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:36,243 INFO L93 Difference]: Finished difference Result 200 states and 222 transitions. [2020-10-14 23:22:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:36,244 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 23:22:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:36,245 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:22:36,245 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 23:22:36,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:36,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 23:22:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 163. [2020-10-14 23:22:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 23:22:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 182 transitions. [2020-10-14 23:22:36,260 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 182 transitions. Word has length 38 [2020-10-14 23:22:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:36,260 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 182 transitions. [2020-10-14 23:22:36,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 182 transitions. [2020-10-14 23:22:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:36,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:36,261 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:36,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:22:36,261 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:36,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1721423476, now seen corresponding path program 4 times [2020-10-14 23:22:36,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:36,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477461508] [2020-10-14 23:22:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:36,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:36,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:22:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:37,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:37,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477461508] [2020-10-14 23:22:37,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:37,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:37,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17539920] [2020-10-14 23:22:37,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:37,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:37,276 INFO L87 Difference]: Start difference. First operand 163 states and 182 transitions. Second operand 15 states. [2020-10-14 23:22:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:38,477 INFO L93 Difference]: Finished difference Result 250 states and 277 transitions. [2020-10-14 23:22:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:22:38,477 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-14 23:22:38,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:38,479 INFO L225 Difference]: With dead ends: 250 [2020-10-14 23:22:38,479 INFO L226 Difference]: Without dead ends: 248 [2020-10-14 23:22:38,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:22:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-14 23:22:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 176. [2020-10-14 23:22:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 23:22:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2020-10-14 23:22:38,493 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 38 [2020-10-14 23:22:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:38,493 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2020-10-14 23:22:38,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2020-10-14 23:22:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:38,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:38,494 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:38,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:22:38,495 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash -829603170, now seen corresponding path program 2 times [2020-10-14 23:22:38,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:38,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698493775] [2020-10-14 23:22:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:39,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:39,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:39,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-14 23:22:39,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:39,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:39,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:39,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:39,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:39,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:39,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:39,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:39,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698493775] [2020-10-14 23:22:39,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:39,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:39,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056368793] [2020-10-14 23:22:39,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:39,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:39,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:39,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:39,316 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand 13 states. [2020-10-14 23:22:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:40,064 INFO L93 Difference]: Finished difference Result 209 states and 230 transitions. [2020-10-14 23:22:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:40,064 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 23:22:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:40,065 INFO L225 Difference]: With dead ends: 209 [2020-10-14 23:22:40,066 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 23:22:40,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 23:22:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-14 23:22:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:22:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2020-10-14 23:22:40,080 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 38 [2020-10-14 23:22:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:40,080 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2020-10-14 23:22:40,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2020-10-14 23:22:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:22:40,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:40,081 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:40,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:22:40,082 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash -504229408, now seen corresponding path program 5 times [2020-10-14 23:22:40,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:40,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458053543] [2020-10-14 23:22:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:22:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-14 23:22:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:40,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:22:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:41,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458053543] [2020-10-14 23:22:41,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:41,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:41,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954445210] [2020-10-14 23:22:41,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:41,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:41,415 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand 16 states. [2020-10-14 23:22:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:42,634 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2020-10-14 23:22:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:42,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-14 23:22:42,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:42,635 INFO L225 Difference]: With dead ends: 178 [2020-10-14 23:22:42,635 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:22:42,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:22:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:22:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 126. [2020-10-14 23:22:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 23:22:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2020-10-14 23:22:42,651 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 39 [2020-10-14 23:22:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:42,651 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2020-10-14 23:22:42,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:42,652 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2020-10-14 23:22:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:22:42,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:42,652 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:42,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:22:42,653 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash 5243682, now seen corresponding path program 6 times [2020-10-14 23:22:42,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:42,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519086008] [2020-10-14 23:22:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:43,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:43,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:22:43,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-14 23:22:43,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:43,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:22:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:44,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:44,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:44,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:44,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519086008] [2020-10-14 23:22:44,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:44,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:44,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172315218] [2020-10-14 23:22:44,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:44,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:44,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:44,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:44,017 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand 15 states. [2020-10-14 23:22:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:44,769 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2020-10-14 23:22:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:44,770 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-14 23:22:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:44,771 INFO L225 Difference]: With dead ends: 163 [2020-10-14 23:22:44,771 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 23:22:44,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 23:22:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2020-10-14 23:22:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 23:22:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-10-14 23:22:44,789 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 39 [2020-10-14 23:22:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:44,790 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-10-14 23:22:44,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-10-14 23:22:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:44,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:44,791 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:44,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:22:44,791 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1021251364, now seen corresponding path program 2 times [2020-10-14 23:22:44,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:44,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899863390] [2020-10-14 23:22:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:45,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:46,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899863390] [2020-10-14 23:22:46,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:46,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:46,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838388705] [2020-10-14 23:22:46,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:46,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:46,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:46,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:46,141 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 16 states. [2020-10-14 23:22:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:47,281 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2020-10-14 23:22:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:22:47,282 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-14 23:22:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:47,284 INFO L225 Difference]: With dead ends: 208 [2020-10-14 23:22:47,284 INFO L226 Difference]: Without dead ends: 206 [2020-10-14 23:22:47,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:22:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-14 23:22:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2020-10-14 23:22:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:22:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2020-10-14 23:22:47,301 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 41 [2020-10-14 23:22:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:47,301 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2020-10-14 23:22:47,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2020-10-14 23:22:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:47,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:47,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:47,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:22:47,303 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:47,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2136337528, now seen corresponding path program 5 times [2020-10-14 23:22:47,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:47,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568945047] [2020-10-14 23:22:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:47,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:48,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:48,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:48,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1622 [2020-10-14 23:22:48,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:48,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:22:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:49,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:49,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:49,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:49,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:49,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:49,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:49,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568945047] [2020-10-14 23:22:49,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:49,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:49,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059408442] [2020-10-14 23:22:49,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:49,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:49,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:49,344 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand 15 states. [2020-10-14 23:22:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:50,065 INFO L93 Difference]: Finished difference Result 241 states and 267 transitions. [2020-10-14 23:22:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:50,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:50,067 INFO L225 Difference]: With dead ends: 241 [2020-10-14 23:22:50,067 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 23:22:50,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:22:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 23:22:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 171. [2020-10-14 23:22:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 23:22:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 193 transitions. [2020-10-14 23:22:50,091 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 193 transitions. Word has length 41 [2020-10-14 23:22:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:50,092 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 193 transitions. [2020-10-14 23:22:50,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 193 transitions. [2020-10-14 23:22:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:50,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:50,093 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:50,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:22:50,093 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:50,093 INFO L82 PathProgramCache]: Analyzing trace with hash 998619110, now seen corresponding path program 1 times [2020-10-14 23:22:50,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:50,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122528308] [2020-10-14 23:22:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:50,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:50,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:50,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 23:22:50,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:50,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:22:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:51,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:51,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:51,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122528308] [2020-10-14 23:22:51,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:51,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:51,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869258924] [2020-10-14 23:22:51,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:51,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:51,064 INFO L87 Difference]: Start difference. First operand 171 states and 193 transitions. Second operand 15 states. [2020-10-14 23:22:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:51,931 INFO L93 Difference]: Finished difference Result 270 states and 307 transitions. [2020-10-14 23:22:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:22:51,931 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:51,933 INFO L225 Difference]: With dead ends: 270 [2020-10-14 23:22:51,933 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 23:22:51,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 23:22:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 210. [2020-10-14 23:22:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 23:22:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 236 transitions. [2020-10-14 23:22:51,956 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 236 transitions. Word has length 41 [2020-10-14 23:22:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:51,957 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 236 transitions. [2020-10-14 23:22:51,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 236 transitions. [2020-10-14 23:22:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:51,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:51,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:51,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:22:51,958 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:51,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2113705274, now seen corresponding path program 3 times [2020-10-14 23:22:51,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:51,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984515284] [2020-10-14 23:22:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:52,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:52,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:52,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-14 23:22:52,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:52,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:52,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:52,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:52,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:53,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:53,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984515284] [2020-10-14 23:22:53,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:53,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:53,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319120410] [2020-10-14 23:22:53,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:53,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:53,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:53,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:53,154 INFO L87 Difference]: Start difference. First operand 210 states and 236 transitions. Second operand 15 states. [2020-10-14 23:22:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:54,495 INFO L93 Difference]: Finished difference Result 378 states and 421 transitions. [2020-10-14 23:22:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:54,496 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:54,498 INFO L225 Difference]: With dead ends: 378 [2020-10-14 23:22:54,499 INFO L226 Difference]: Without dead ends: 376 [2020-10-14 23:22:54,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-14 23:22:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 251. [2020-10-14 23:22:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-14 23:22:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2020-10-14 23:22:54,527 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 41 [2020-10-14 23:22:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:54,527 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2020-10-14 23:22:54,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2020-10-14 23:22:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:54,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:54,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:54,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:22:54,528 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash 190477240, now seen corresponding path program 4 times [2020-10-14 23:22:54,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:54,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020182496] [2020-10-14 23:22:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:54,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:22:54,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:55,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:55,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:55,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:55,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:55,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:55,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:55,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:55,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:55,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020182496] [2020-10-14 23:22:55,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:55,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:55,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564469823] [2020-10-14 23:22:55,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:55,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:55,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:55,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:55,457 INFO L87 Difference]: Start difference. First operand 251 states and 281 transitions. Second operand 15 states. [2020-10-14 23:22:56,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:56,442 INFO L93 Difference]: Finished difference Result 338 states and 372 transitions. [2020-10-14 23:22:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:56,442 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:56,445 INFO L225 Difference]: With dead ends: 338 [2020-10-14 23:22:56,445 INFO L226 Difference]: Without dead ends: 326 [2020-10-14 23:22:56,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-14 23:22:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 275. [2020-10-14 23:22:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-14 23:22:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 306 transitions. [2020-10-14 23:22:56,469 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 306 transitions. Word has length 41 [2020-10-14 23:22:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:56,469 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 306 transitions. [2020-10-14 23:22:56,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 306 transitions. [2020-10-14 23:22:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:22:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:56,470 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:56,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:22:56,470 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1601290466, now seen corresponding path program 6 times [2020-10-14 23:22:56,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:56,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645615220] [2020-10-14 23:22:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:56,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:57,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:57,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:57,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645615220] [2020-10-14 23:22:57,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:57,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:57,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370985618] [2020-10-14 23:22:57,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:57,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:57,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:57,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:57,400 INFO L87 Difference]: Start difference. First operand 275 states and 306 transitions. Second operand 14 states. [2020-10-14 23:22:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:58,249 INFO L93 Difference]: Finished difference Result 327 states and 359 transitions. [2020-10-14 23:22:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:58,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 23:22:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:58,251 INFO L225 Difference]: With dead ends: 327 [2020-10-14 23:22:58,251 INFO L226 Difference]: Without dead ends: 275 [2020-10-14 23:22:58,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-14 23:22:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-10-14 23:22:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-14 23:22:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 304 transitions. [2020-10-14 23:22:58,273 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 304 transitions. Word has length 43 [2020-10-14 23:22:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:58,273 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 304 transitions. [2020-10-14 23:22:58,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 304 transitions. [2020-10-14 23:22:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:58,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:58,274 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:58,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:22:58,275 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:58,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:58,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1024227380, now seen corresponding path program 3 times [2020-10-14 23:22:58,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:58,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554393235] [2020-10-14 23:22:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:59,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-14 23:22:59,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:59,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:22:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:59,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:59,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:59,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554393235] [2020-10-14 23:22:59,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:59,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:59,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772088959] [2020-10-14 23:22:59,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:59,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:59,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:59,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:59,786 INFO L87 Difference]: Start difference. First operand 275 states and 304 transitions. Second operand 17 states. [2020-10-14 23:23:00,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:00,988 INFO L93 Difference]: Finished difference Result 307 states and 337 transitions. [2020-10-14 23:23:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:00,988 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-14 23:23:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:00,990 INFO L225 Difference]: With dead ends: 307 [2020-10-14 23:23:00,990 INFO L226 Difference]: Without dead ends: 305 [2020-10-14 23:23:00,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:23:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-14 23:23:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 236. [2020-10-14 23:23:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 23:23:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2020-10-14 23:23:01,010 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 44 [2020-10-14 23:23:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:01,011 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2020-10-14 23:23:01,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2020-10-14 23:23:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:23:01,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:01,012 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:01,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:23:01,012 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash 882283166, now seen corresponding path program 2 times [2020-10-14 23:23:01,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:01,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155533247] [2020-10-14 23:23:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:23:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-14 23:23:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:01,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:02,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155533247] [2020-10-14 23:23:02,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:02,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:23:02,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690488184] [2020-10-14 23:23:02,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:23:02,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:02,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:23:02,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:02,002 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand 16 states. [2020-10-14 23:23:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:03,391 INFO L93 Difference]: Finished difference Result 295 states and 328 transitions. [2020-10-14 23:23:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:03,392 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 23:23:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:03,394 INFO L225 Difference]: With dead ends: 295 [2020-10-14 23:23:03,394 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 23:23:03,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:23:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 23:23:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-10-14 23:23:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-14 23:23:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2020-10-14 23:23:03,423 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 44 [2020-10-14 23:23:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:03,423 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2020-10-14 23:23:03,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2020-10-14 23:23:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:23:03,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:03,425 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:03,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:23:03,425 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:03,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1997369330, now seen corresponding path program 5 times [2020-10-14 23:23:03,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:03,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697143676] [2020-10-14 23:23:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:03,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:04,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:04,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:23:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:04,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:04,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:04,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:04,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:04,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:04,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:04,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:04,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:04,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697143676] [2020-10-14 23:23:04,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:04,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:23:04,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430522153] [2020-10-14 23:23:04,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:23:04,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:23:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:23:04,849 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand 15 states. [2020-10-14 23:23:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:05,748 INFO L93 Difference]: Finished difference Result 285 states and 313 transitions. [2020-10-14 23:23:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:23:05,749 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 23:23:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:05,751 INFO L225 Difference]: With dead ends: 285 [2020-10-14 23:23:05,751 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 23:23:05,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:23:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 23:23:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 236. [2020-10-14 23:23:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 23:23:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2020-10-14 23:23:05,778 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 44 [2020-10-14 23:23:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:05,779 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2020-10-14 23:23:05,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:23:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2020-10-14 23:23:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:23:05,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:05,780 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:05,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:23:05,780 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash -951840822, now seen corresponding path program 3 times [2020-10-14 23:23:05,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:05,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672899426] [2020-10-14 23:23:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:06,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:06,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:23:06,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:07,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:07,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:07,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:07,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:07,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672899426] [2020-10-14 23:23:07,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:07,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:23:07,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180741904] [2020-10-14 23:23:07,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:23:07,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:07,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:23:07,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:07,128 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand 16 states. [2020-10-14 23:23:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:08,175 INFO L93 Difference]: Finished difference Result 314 states and 346 transitions. [2020-10-14 23:23:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:23:08,175 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 23:23:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:08,178 INFO L225 Difference]: With dead ends: 314 [2020-10-14 23:23:08,178 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 23:23:08,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:23:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 23:23:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 214. [2020-10-14 23:23:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 23:23:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2020-10-14 23:23:08,202 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 44 [2020-10-14 23:23:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:08,203 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2020-10-14 23:23:08,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2020-10-14 23:23:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:23:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:08,204 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:08,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:23:08,204 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:08,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:08,204 INFO L82 PathProgramCache]: Analyzing trace with hash 163245342, now seen corresponding path program 6 times [2020-10-14 23:23:08,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:08,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740825932] [2020-10-14 23:23:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:23:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:09,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:09,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:09,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:09,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:09,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:09,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:09,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:09,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:09,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:09,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740825932] [2020-10-14 23:23:09,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:09,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:09,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778521994] [2020-10-14 23:23:09,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:09,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:09,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:09,910 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand 17 states. [2020-10-14 23:23:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:11,634 INFO L93 Difference]: Finished difference Result 323 states and 360 transitions. [2020-10-14 23:23:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:23:11,634 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-14 23:23:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:11,636 INFO L225 Difference]: With dead ends: 323 [2020-10-14 23:23:11,636 INFO L226 Difference]: Without dead ends: 321 [2020-10-14 23:23:11,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-14 23:23:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 252. [2020-10-14 23:23:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 23:23:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2020-10-14 23:23:11,662 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 44 [2020-10-14 23:23:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:11,663 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2020-10-14 23:23:11,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2020-10-14 23:23:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:23:11,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:11,664 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:11,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:23:11,664 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:11,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1974737076, now seen corresponding path program 7 times [2020-10-14 23:23:11,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:11,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873553238] [2020-10-14 23:23:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:12,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:23:12,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-14 23:23:12,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:12,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:23:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:12,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873553238] [2020-10-14 23:23:12,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:12,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:23:12,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882535199] [2020-10-14 23:23:12,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:23:12,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:12,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:23:12,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:23:12,685 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand 15 states. [2020-10-14 23:23:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:13,864 INFO L93 Difference]: Finished difference Result 266 states and 292 transitions. [2020-10-14 23:23:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:23:13,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 23:23:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:13,867 INFO L225 Difference]: With dead ends: 266 [2020-10-14 23:23:13,867 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 23:23:13,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:23:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 23:23:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-14 23:23:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 23:23:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2020-10-14 23:23:13,906 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 44 [2020-10-14 23:23:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:13,907 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2020-10-14 23:23:13,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:23:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2020-10-14 23:23:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:13,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:13,908 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:13,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:23:13,908 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:13,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1303728246, now seen corresponding path program 7 times [2020-10-14 23:23:13,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:13,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506080907] [2020-10-14 23:23:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:14,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-10-14 23:23:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:14,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:23:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:15,267 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-14 23:23:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:15,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:15,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:15,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:15,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:15,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:15,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506080907] [2020-10-14 23:23:15,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:15,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:15,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61814123] [2020-10-14 23:23:15,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:15,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:15,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:15,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:15,510 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand 17 states. [2020-10-14 23:23:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:17,376 INFO L93 Difference]: Finished difference Result 499 states and 552 transitions. [2020-10-14 23:23:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:17,377 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-14 23:23:17,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:17,380 INFO L225 Difference]: With dead ends: 499 [2020-10-14 23:23:17,380 INFO L226 Difference]: Without dead ends: 497 [2020-10-14 23:23:17,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-14 23:23:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 292. [2020-10-14 23:23:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-14 23:23:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 325 transitions. [2020-10-14 23:23:17,410 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 325 transitions. Word has length 46 [2020-10-14 23:23:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:17,410 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 325 transitions. [2020-10-14 23:23:17,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 325 transitions. [2020-10-14 23:23:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:23:17,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:17,411 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:17,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:23:17,412 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:17,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1578487860, now seen corresponding path program 8 times [2020-10-14 23:23:17,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:17,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266838316] [2020-10-14 23:23:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:17,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:23:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:18,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:18,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:18,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266838316] [2020-10-14 23:23:18,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:18,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:18,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059471586] [2020-10-14 23:23:18,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:18,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:18,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:18,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:18,482 INFO L87 Difference]: Start difference. First operand 292 states and 325 transitions. Second operand 17 states. [2020-10-14 23:23:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:20,103 INFO L93 Difference]: Finished difference Result 455 states and 497 transitions. [2020-10-14 23:23:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:20,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-14 23:23:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:20,107 INFO L225 Difference]: With dead ends: 455 [2020-10-14 23:23:20,107 INFO L226 Difference]: Without dead ends: 443 [2020-10-14 23:23:20,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-14 23:23:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 398. [2020-10-14 23:23:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-14 23:23:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 437 transitions. [2020-10-14 23:23:20,141 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 437 transitions. Word has length 46 [2020-10-14 23:23:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:20,142 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 437 transitions. [2020-10-14 23:23:20,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 437 transitions. [2020-10-14 23:23:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:23:20,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:20,143 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:20,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:23:20,143 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1342996538, now seen corresponding path program 4 times [2020-10-14 23:23:20,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:20,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849725142] [2020-10-14 23:23:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:23:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:21,490 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-14 23:23:21,622 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-14 23:23:21,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:21,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849725142] [2020-10-14 23:23:21,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:21,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:21,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480205205] [2020-10-14 23:23:21,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:21,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:21,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:21,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:21,934 INFO L87 Difference]: Start difference. First operand 398 states and 437 transitions. Second operand 18 states. [2020-10-14 23:23:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:23,743 INFO L93 Difference]: Finished difference Result 537 states and 596 transitions. [2020-10-14 23:23:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:23:23,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-14 23:23:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:23,745 INFO L225 Difference]: With dead ends: 537 [2020-10-14 23:23:23,746 INFO L226 Difference]: Without dead ends: 535 [2020-10-14 23:23:23,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-14 23:23:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 462. [2020-10-14 23:23:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-14 23:23:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 508 transitions. [2020-10-14 23:23:23,785 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 508 transitions. Word has length 47 [2020-10-14 23:23:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:23,785 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 508 transitions. [2020-10-14 23:23:23,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 508 transitions. [2020-10-14 23:23:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:23:23,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:23,787 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:23,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:23:23,787 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1836884594, now seen corresponding path program 9 times [2020-10-14 23:23:23,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:23,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867217861] [2020-10-14 23:23:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:23:26,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2641 [2020-10-14 23:23:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:26,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:23:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:23:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:27,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:27,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867217861] [2020-10-14 23:23:27,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:27,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:27,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566551867] [2020-10-14 23:23:27,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:27,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:27,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:27,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:27,166 INFO L87 Difference]: Start difference. First operand 462 states and 508 transitions. Second operand 17 states. [2020-10-14 23:23:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:28,842 INFO L93 Difference]: Finished difference Result 609 states and 675 transitions. [2020-10-14 23:23:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:28,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-14 23:23:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:28,846 INFO L225 Difference]: With dead ends: 609 [2020-10-14 23:23:28,846 INFO L226 Difference]: Without dead ends: 597 [2020-10-14 23:23:28,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-14 23:23:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 471. [2020-10-14 23:23:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-14 23:23:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 522 transitions. [2020-10-14 23:23:28,891 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 522 transitions. Word has length 47 [2020-10-14 23:23:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:28,892 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 522 transitions. [2020-10-14 23:23:28,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 522 transitions. [2020-10-14 23:23:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:23:28,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:28,893 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:28,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:23:28,894 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:28,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1415383096, now seen corresponding path program 5 times [2020-10-14 23:23:28,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:28,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747111108] [2020-10-14 23:23:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:29,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:29,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:23:29,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:30,062 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-14 23:23:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:30,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:30,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:30,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:30,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747111108] [2020-10-14 23:23:30,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:30,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:30,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078310016] [2020-10-14 23:23:30,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:30,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:30,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:30,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:30,490 INFO L87 Difference]: Start difference. First operand 471 states and 522 transitions. Second operand 17 states. [2020-10-14 23:23:31,286 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-14 23:23:31,654 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-14 23:23:32,078 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-14 23:23:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:32,933 INFO L93 Difference]: Finished difference Result 518 states and 577 transitions. [2020-10-14 23:23:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:23:32,933 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-14 23:23:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:32,936 INFO L225 Difference]: With dead ends: 518 [2020-10-14 23:23:32,936 INFO L226 Difference]: Without dead ends: 505 [2020-10-14 23:23:32,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:23:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-14 23:23:32,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 450. [2020-10-14 23:23:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-14 23:23:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 499 transitions. [2020-10-14 23:23:32,974 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 499 transitions. Word has length 47 [2020-10-14 23:23:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:32,974 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 499 transitions. [2020-10-14 23:23:32,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 499 transitions. [2020-10-14 23:23:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:32,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:32,975 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:32,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:23:32,975 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:32,976 INFO L82 PathProgramCache]: Analyzing trace with hash 25073230, now seen corresponding path program 4 times [2020-10-14 23:23:32,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:32,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029365868] [2020-10-14 23:23:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:33,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:23:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:34,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:34,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029365868] [2020-10-14 23:23:34,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:34,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:34,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857306268] [2020-10-14 23:23:34,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:34,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:34,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:34,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:34,454 INFO L87 Difference]: Start difference. First operand 450 states and 499 transitions. Second operand 18 states. [2020-10-14 23:23:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:36,629 INFO L93 Difference]: Finished difference Result 571 states and 623 transitions. [2020-10-14 23:23:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:23:36,630 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-14 23:23:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:36,633 INFO L225 Difference]: With dead ends: 571 [2020-10-14 23:23:36,633 INFO L226 Difference]: Without dead ends: 569 [2020-10-14 23:23:36,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:23:36,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-14 23:23:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 487. [2020-10-14 23:23:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-14 23:23:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 537 transitions. [2020-10-14 23:23:36,690 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 537 transitions. Word has length 49 [2020-10-14 23:23:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:36,691 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 537 transitions. [2020-10-14 23:23:36,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 537 transitions. [2020-10-14 23:23:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:36,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:36,692 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:36,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:23:36,693 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1140159394, now seen corresponding path program 8 times [2020-10-14 23:23:36,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:36,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68971263] [2020-10-14 23:23:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:38,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:23:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:38,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:38,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68971263] [2020-10-14 23:23:38,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:38,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:38,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998473167] [2020-10-14 23:23:38,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:38,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:38,922 INFO L87 Difference]: Start difference. First operand 487 states and 537 transitions. Second operand 17 states. [2020-10-14 23:23:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:40,140 INFO L93 Difference]: Finished difference Result 518 states and 570 transitions. [2020-10-14 23:23:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:23:40,141 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-14 23:23:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:40,143 INFO L225 Difference]: With dead ends: 518 [2020-10-14 23:23:40,143 INFO L226 Difference]: Without dead ends: 506 [2020-10-14 23:23:40,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:23:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-14 23:23:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 450. [2020-10-14 23:23:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-14 23:23:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 499 transitions. [2020-10-14 23:23:40,183 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 499 transitions. Word has length 49 [2020-10-14 23:23:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:40,183 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 499 transitions. [2020-10-14 23:23:40,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 499 transitions. [2020-10-14 23:23:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:40,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:40,184 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:40,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:23:40,185 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:40,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1125163038, now seen corresponding path program 9 times [2020-10-14 23:23:40,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:40,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627070388] [2020-10-14 23:23:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-14 23:23:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:23:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:41,787 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-14 23:23:41,996 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-14 23:23:42,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:42,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:42,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:42,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:42,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:42,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:42,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627070388] [2020-10-14 23:23:42,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:42,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:23:42,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983701677] [2020-10-14 23:23:42,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:23:42,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:42,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:23:42,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:42,261 INFO L87 Difference]: Start difference. First operand 450 states and 499 transitions. Second operand 19 states. [2020-10-14 23:23:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:44,689 INFO L93 Difference]: Finished difference Result 641 states and 706 transitions. [2020-10-14 23:23:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:23:44,690 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-14 23:23:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:44,693 INFO L225 Difference]: With dead ends: 641 [2020-10-14 23:23:44,693 INFO L226 Difference]: Without dead ends: 639 [2020-10-14 23:23:44,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:23:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-14 23:23:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 479. [2020-10-14 23:23:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-14 23:23:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 529 transitions. [2020-10-14 23:23:44,743 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 529 transitions. Word has length 49 [2020-10-14 23:23:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:44,743 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 529 transitions. [2020-10-14 23:23:44,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:23:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 529 transitions. [2020-10-14 23:23:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:44,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:44,745 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:44,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:23:44,745 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1984164896, now seen corresponding path program 10 times [2020-10-14 23:23:44,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:44,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097542745] [2020-10-14 23:23:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:44,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-14 23:23:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:45,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:23:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:46,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097542745] [2020-10-14 23:23:46,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:46,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:46,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715574227] [2020-10-14 23:23:46,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:46,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:46,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:46,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:46,005 INFO L87 Difference]: Start difference. First operand 479 states and 529 transitions. Second operand 17 states. [2020-10-14 23:23:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:47,576 INFO L93 Difference]: Finished difference Result 553 states and 604 transitions. [2020-10-14 23:23:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:23:47,577 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-14 23:23:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:47,578 INFO L225 Difference]: With dead ends: 553 [2020-10-14 23:23:47,578 INFO L226 Difference]: Without dead ends: 383 [2020-10-14 23:23:47,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-14 23:23:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2020-10-14 23:23:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-14 23:23:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 425 transitions. [2020-10-14 23:23:47,615 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 425 transitions. Word has length 49 [2020-10-14 23:23:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:47,615 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 425 transitions. [2020-10-14 23:23:47,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 425 transitions. [2020-10-14 23:23:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:23:47,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:47,616 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:47,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:23:47,616 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash -260416226, now seen corresponding path program 6 times [2020-10-14 23:23:47,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:47,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711801442] [2020-10-14 23:23:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:48,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:23:48,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-14 23:23:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:48,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:23:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:23:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:49,117 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 23:23:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:49,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711801442] [2020-10-14 23:23:49,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:49,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:23:49,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562132935] [2020-10-14 23:23:49,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:23:49,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:49,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:23:49,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:49,546 INFO L87 Difference]: Start difference. First operand 383 states and 425 transitions. Second operand 19 states. [2020-10-14 23:23:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:51,358 INFO L93 Difference]: Finished difference Result 444 states and 487 transitions. [2020-10-14 23:23:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:23:51,359 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-14 23:23:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:51,361 INFO L225 Difference]: With dead ends: 444 [2020-10-14 23:23:51,361 INFO L226 Difference]: Without dead ends: 442 [2020-10-14 23:23:51,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:23:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-14 23:23:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 319. [2020-10-14 23:23:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-14 23:23:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 355 transitions. [2020-10-14 23:23:51,394 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 355 transitions. Word has length 50 [2020-10-14 23:23:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:51,395 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 355 transitions. [2020-10-14 23:23:51,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:23:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 355 transitions. [2020-10-14 23:23:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:23:51,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:51,395 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:51,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:23:51,396 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:51,396 INFO L82 PathProgramCache]: Analyzing trace with hash 133950560, now seen corresponding path program 7 times [2020-10-14 23:23:51,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:51,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553372976] [2020-10-14 23:23:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:52,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:23:52,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-14 23:23:52,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:52,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:23:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:23:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:53,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:23:53,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553372976] [2020-10-14 23:23:53,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:53,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:53,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724566105] [2020-10-14 23:23:53,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:53,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:53,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:53,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:53,175 INFO L87 Difference]: Start difference. First operand 319 states and 355 transitions. Second operand 17 states. [2020-10-14 23:23:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:54,520 INFO L93 Difference]: Finished difference Result 409 states and 455 transitions. [2020-10-14 23:23:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:54,521 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-14 23:23:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:54,523 INFO L225 Difference]: With dead ends: 409 [2020-10-14 23:23:54,523 INFO L226 Difference]: Without dead ends: 396 [2020-10-14 23:23:54,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:23:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-14 23:23:54,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 319. [2020-10-14 23:23:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-14 23:23:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 354 transitions. [2020-10-14 23:23:54,556 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 354 transitions. Word has length 50 [2020-10-14 23:23:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:54,556 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 354 transitions. [2020-10-14 23:23:54,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 354 transitions. [2020-10-14 23:23:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:54,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:54,557 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:54,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:23:54,558 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1803294986, now seen corresponding path program 5 times [2020-10-14 23:23:54,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:54,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873253055] [2020-10-14 23:23:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:23:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:56,027 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-14 23:23:56,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:56,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:56,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:56,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:56,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:56,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873253055] [2020-10-14 23:23:56,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:56,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:23:56,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594779335] [2020-10-14 23:23:56,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:23:56,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:23:56,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:23:56,502 INFO L87 Difference]: Start difference. First operand 319 states and 354 transitions. Second operand 20 states. [2020-10-14 23:23:58,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:58,656 INFO L93 Difference]: Finished difference Result 533 states and 594 transitions. [2020-10-14 23:23:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:23:58,656 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-14 23:23:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:58,659 INFO L225 Difference]: With dead ends: 533 [2020-10-14 23:23:58,660 INFO L226 Difference]: Without dead ends: 531 [2020-10-14 23:23:58,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:23:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-14 23:23:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 430. [2020-10-14 23:23:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 23:23:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 476 transitions. [2020-10-14 23:23:58,702 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 476 transitions. Word has length 52 [2020-10-14 23:23:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:58,702 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 476 transitions. [2020-10-14 23:23:58,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:23:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 476 transitions. [2020-10-14 23:23:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:58,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:58,704 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:58,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:23:58,704 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:58,704 INFO L82 PathProgramCache]: Analyzing trace with hash -688208822, now seen corresponding path program 10 times [2020-10-14 23:23:58,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:58,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463685478] [2020-10-14 23:23:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:02,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:24:02,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3300 [2020-10-14 23:24:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:02,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:24:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:24:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:02,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:02,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:02,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:02,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:02,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463685478] [2020-10-14 23:24:02,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:02,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:02,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228566975] [2020-10-14 23:24:02,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:02,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:02,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:02,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:02,833 INFO L87 Difference]: Start difference. First operand 430 states and 476 transitions. Second operand 19 states. [2020-10-14 23:24:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:04,441 INFO L93 Difference]: Finished difference Result 495 states and 543 transitions. [2020-10-14 23:24:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:24:04,442 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:24:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:04,445 INFO L225 Difference]: With dead ends: 495 [2020-10-14 23:24:04,445 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 23:24:04,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:24:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 23:24:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 324. [2020-10-14 23:24:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-14 23:24:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 364 transitions. [2020-10-14 23:24:04,478 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 364 transitions. Word has length 52 [2020-10-14 23:24:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:04,479 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 364 transitions. [2020-10-14 23:24:04,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 364 transitions. [2020-10-14 23:24:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:24:04,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:04,479 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:04,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:24:04,480 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:04,480 INFO L82 PathProgramCache]: Analyzing trace with hash -773935688, now seen corresponding path program 8 times [2020-10-14 23:24:04,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:04,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006712262] [2020-10-14 23:24:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:05,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:24:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:06,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:06,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006712262] [2020-10-14 23:24:06,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:06,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:06,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971157351] [2020-10-14 23:24:06,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:06,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:06,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:06,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:06,344 INFO L87 Difference]: Start difference. First operand 324 states and 364 transitions. Second operand 19 states. [2020-10-14 23:24:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:08,098 INFO L93 Difference]: Finished difference Result 601 states and 689 transitions. [2020-10-14 23:24:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:24:08,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:24:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:08,101 INFO L225 Difference]: With dead ends: 601 [2020-10-14 23:24:08,101 INFO L226 Difference]: Without dead ends: 588 [2020-10-14 23:24:08,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:24:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-14 23:24:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 435. [2020-10-14 23:24:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-14 23:24:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 485 transitions. [2020-10-14 23:24:08,164 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 485 transitions. Word has length 52 [2020-10-14 23:24:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:08,165 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 485 transitions. [2020-10-14 23:24:08,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 485 transitions. [2020-10-14 23:24:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:24:08,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:08,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:08,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:24:08,166 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:08,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:08,167 INFO L82 PathProgramCache]: Analyzing trace with hash 341150476, now seen corresponding path program 11 times [2020-10-14 23:24:08,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:08,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564324715] [2020-10-14 23:24:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:24:09,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-14 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:09,838 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-14 23:24:10,007 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-14 23:24:10,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:10,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:10,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:10,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:10,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:10,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:10,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564324715] [2020-10-14 23:24:10,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:10,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:10,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416133755] [2020-10-14 23:24:10,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:10,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:10,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:10,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:10,309 INFO L87 Difference]: Start difference. First operand 435 states and 485 transitions. Second operand 19 states. [2020-10-14 23:24:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:13,001 INFO L93 Difference]: Finished difference Result 871 states and 970 transitions. [2020-10-14 23:24:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:24:13,002 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:24:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:13,006 INFO L225 Difference]: With dead ends: 871 [2020-10-14 23:24:13,006 INFO L226 Difference]: Without dead ends: 869 [2020-10-14 23:24:13,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:24:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-10-14 23:24:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 547. [2020-10-14 23:24:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-14 23:24:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 608 transitions. [2020-10-14 23:24:13,089 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 608 transitions. Word has length 52 [2020-10-14 23:24:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:13,090 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 608 transitions. [2020-10-14 23:24:13,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 608 transitions. [2020-10-14 23:24:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:24:13,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:13,091 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:13,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:24:13,091 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:13,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1185155978, now seen corresponding path program 12 times [2020-10-14 23:24:13,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:13,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821406317] [2020-10-14 23:24:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:13,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:24:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:14,304 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-14 23:24:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:14,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:14,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:14,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821406317] [2020-10-14 23:24:14,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:14,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:14,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884750800] [2020-10-14 23:24:14,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:14,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:14,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:14,801 INFO L87 Difference]: Start difference. First operand 547 states and 608 transitions. Second operand 19 states. [2020-10-14 23:24:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:16,887 INFO L93 Difference]: Finished difference Result 791 states and 876 transitions. [2020-10-14 23:24:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:24:16,888 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:24:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:16,892 INFO L225 Difference]: With dead ends: 791 [2020-10-14 23:24:16,892 INFO L226 Difference]: Without dead ends: 779 [2020-10-14 23:24:16,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:24:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-10-14 23:24:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 616. [2020-10-14 23:24:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-14 23:24:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 680 transitions. [2020-10-14 23:24:16,992 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 680 transitions. Word has length 52 [2020-10-14 23:24:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:16,992 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 680 transitions. [2020-10-14 23:24:16,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 680 transitions. [2020-10-14 23:24:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:24:16,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:16,993 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:16,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:24:16,993 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:16,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1628237152, now seen corresponding path program 11 times [2020-10-14 23:24:16,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:16,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594967194] [2020-10-14 23:24:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:24:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:24:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:18,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 7 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:18,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594967194] [2020-10-14 23:24:18,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:18,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:24:18,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457544814] [2020-10-14 23:24:18,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:24:18,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:18,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:24:18,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:24:18,784 INFO L87 Difference]: Start difference. First operand 616 states and 680 transitions. Second operand 18 states. [2020-10-14 23:24:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:20,902 INFO L93 Difference]: Finished difference Result 741 states and 811 transitions. [2020-10-14 23:24:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:24:20,903 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-14 23:24:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:20,906 INFO L225 Difference]: With dead ends: 741 [2020-10-14 23:24:20,906 INFO L226 Difference]: Without dead ends: 626 [2020-10-14 23:24:20,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:24:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-14 23:24:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2020-10-14 23:24:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-14 23:24:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-14 23:24:20,994 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 54 [2020-10-14 23:24:20,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:20,994 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-14 23:24:20,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:24:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-14 23:24:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:20,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:20,996 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:20,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:24:20,996 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:20,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1325200268, now seen corresponding path program 9 times [2020-10-14 23:24:20,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:20,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284699065] [2020-10-14 23:24:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:22,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:24:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:22,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:22,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:22,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:22,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284699065] [2020-10-14 23:24:22,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:22,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:24:22,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932018644] [2020-10-14 23:24:22,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:24:22,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:24:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:24:22,818 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-14 23:24:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:25,953 INFO L93 Difference]: Finished difference Result 716 states and 783 transitions. [2020-10-14 23:24:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:24:25,954 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 23:24:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:25,957 INFO L225 Difference]: With dead ends: 716 [2020-10-14 23:24:25,957 INFO L226 Difference]: Without dead ends: 714 [2020-10-14 23:24:25,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:24:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-14 23:24:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 692. [2020-10-14 23:24:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-14 23:24:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 757 transitions. [2020-10-14 23:24:26,027 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 757 transitions. Word has length 55 [2020-10-14 23:24:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:26,028 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 757 transitions. [2020-10-14 23:24:26,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:24:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 757 transitions. [2020-10-14 23:24:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:26,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:26,029 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:26,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:24:26,029 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:26,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1854680864, now seen corresponding path program 13 times [2020-10-14 23:24:26,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:26,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926504554] [2020-10-14 23:24:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:24:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:24:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:28,641 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 23:24:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:29,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926504554] [2020-10-14 23:24:29,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:29,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:29,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001515328] [2020-10-14 23:24:29,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:29,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:29,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:29,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:29,119 INFO L87 Difference]: Start difference. First operand 692 states and 757 transitions. Second operand 19 states. [2020-10-14 23:24:30,159 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-10-14 23:24:30,455 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-14 23:24:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:32,142 INFO L93 Difference]: Finished difference Result 759 states and 839 transitions. [2020-10-14 23:24:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:24:32,142 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 23:24:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:32,145 INFO L225 Difference]: With dead ends: 759 [2020-10-14 23:24:32,146 INFO L226 Difference]: Without dead ends: 747 [2020-10-14 23:24:32,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:24:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-14 23:24:32,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 626. [2020-10-14 23:24:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-14 23:24:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-14 23:24:32,211 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 55 [2020-10-14 23:24:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:32,212 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-14 23:24:32,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-14 23:24:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:32,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:32,213 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:32,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:24:32,213 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:32,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1925750604, now seen corresponding path program 10 times [2020-10-14 23:24:32,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:32,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307891403] [2020-10-14 23:24:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:24:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:33,908 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-14 23:24:34,101 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-14 23:24:34,233 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-14 23:24:34,405 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-14 23:24:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:34,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:34,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:34,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:34,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:34,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:34,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307891403] [2020-10-14 23:24:34,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:34,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:24:34,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582361916] [2020-10-14 23:24:34,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:24:34,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:34,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:24:34,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:24:34,827 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-14 23:24:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:37,172 INFO L93 Difference]: Finished difference Result 763 states and 829 transitions. [2020-10-14 23:24:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:24:37,173 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 23:24:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:37,177 INFO L225 Difference]: With dead ends: 763 [2020-10-14 23:24:37,177 INFO L226 Difference]: Without dead ends: 750 [2020-10-14 23:24:37,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:24:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-14 23:24:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 559. [2020-10-14 23:24:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 23:24:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 622 transitions. [2020-10-14 23:24:37,240 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 622 transitions. Word has length 55 [2020-10-14 23:24:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:37,240 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 622 transitions. [2020-10-14 23:24:37,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:24:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 622 transitions. [2020-10-14 23:24:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:37,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:37,241 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:37,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:24:37,241 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1254130528, now seen corresponding path program 14 times [2020-10-14 23:24:37,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:37,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945441148] [2020-10-14 23:24:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1434 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:24:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:39,344 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-14 23:24:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:39,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945441148] [2020-10-14 23:24:39,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:39,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:39,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598325892] [2020-10-14 23:24:39,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:39,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:39,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:39,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:39,891 INFO L87 Difference]: Start difference. First operand 559 states and 622 transitions. Second operand 21 states. [2020-10-14 23:24:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:43,322 INFO L93 Difference]: Finished difference Result 819 states and 911 transitions. [2020-10-14 23:24:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:24:43,323 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-14 23:24:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:43,326 INFO L225 Difference]: With dead ends: 819 [2020-10-14 23:24:43,326 INFO L226 Difference]: Without dead ends: 817 [2020-10-14 23:24:43,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:24:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-14 23:24:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 671. [2020-10-14 23:24:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-14 23:24:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 735 transitions. [2020-10-14 23:24:43,398 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 735 transitions. Word has length 55 [2020-10-14 23:24:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:43,399 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 735 transitions. [2020-10-14 23:24:43,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 735 transitions. [2020-10-14 23:24:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:43,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:43,400 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:43,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:24:43,400 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -825321566, now seen corresponding path program 15 times [2020-10-14 23:24:43,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:43,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241610114] [2020-10-14 23:24:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:24:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:45,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:45,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:45,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241610114] [2020-10-14 23:24:45,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:45,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:45,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656831502] [2020-10-14 23:24:45,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:45,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:45,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:45,561 INFO L87 Difference]: Start difference. First operand 671 states and 735 transitions. Second operand 19 states. [2020-10-14 23:24:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:47,863 INFO L93 Difference]: Finished difference Result 685 states and 750 transitions. [2020-10-14 23:24:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:24:47,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 23:24:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:47,866 INFO L225 Difference]: With dead ends: 685 [2020-10-14 23:24:47,866 INFO L226 Difference]: Without dead ends: 512 [2020-10-14 23:24:47,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:24:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-14 23:24:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-10-14 23:24:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-14 23:24:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 568 transitions. [2020-10-14 23:24:47,933 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 568 transitions. Word has length 55 [2020-10-14 23:24:47,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:47,933 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 568 transitions. [2020-10-14 23:24:47,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 568 transitions. [2020-10-14 23:24:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:24:47,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:47,934 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:47,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:24:47,934 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash -915543304, now seen corresponding path program 12 times [2020-10-14 23:24:47,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:47,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214710231] [2020-10-14 23:24:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:49,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:24:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:49,629 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-10-14 23:24:49,857 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-10-14 23:24:50,114 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-14 23:24:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:50,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:50,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:50,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214710231] [2020-10-14 23:24:50,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:50,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:50,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321303045] [2020-10-14 23:24:50,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:50,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:50,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:50,506 INFO L87 Difference]: Start difference. First operand 512 states and 568 transitions. Second operand 21 states. [2020-10-14 23:24:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:54,009 INFO L93 Difference]: Finished difference Result 1265 states and 1392 transitions. [2020-10-14 23:24:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:24:54,010 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 23:24:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:54,015 INFO L225 Difference]: With dead ends: 1265 [2020-10-14 23:24:54,016 INFO L226 Difference]: Without dead ends: 1263 [2020-10-14 23:24:54,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:24:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-10-14 23:24:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 769. [2020-10-14 23:24:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-14 23:24:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 852 transitions. [2020-10-14 23:24:54,125 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 852 transitions. Word has length 57 [2020-10-14 23:24:54,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:54,125 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 852 transitions. [2020-10-14 23:24:54,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 852 transitions. [2020-10-14 23:24:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:24:54,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:54,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:54,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:24:54,126 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:54,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:54,127 INFO L82 PathProgramCache]: Analyzing trace with hash 456263994, now seen corresponding path program 16 times [2020-10-14 23:24:54,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:54,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20956923] [2020-10-14 23:24:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:24:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:55,752 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-14 23:24:55,898 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-14 23:24:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:56,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:56,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:56,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:56,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:56,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20956923] [2020-10-14 23:24:56,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:56,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:56,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734074097] [2020-10-14 23:24:56,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:56,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:56,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:56,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:56,548 INFO L87 Difference]: Start difference. First operand 769 states and 852 transitions. Second operand 21 states. [2020-10-14 23:24:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:59,711 INFO L93 Difference]: Finished difference Result 1199 states and 1312 transitions. [2020-10-14 23:24:59,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:24:59,712 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 23:24:59,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:59,717 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 23:24:59,717 INFO L226 Difference]: Without dead ends: 1187 [2020-10-14 23:24:59,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:24:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-14 23:24:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1058. [2020-10-14 23:24:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-14 23:24:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1155 transitions. [2020-10-14 23:24:59,835 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1155 transitions. Word has length 57 [2020-10-14 23:24:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:59,835 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1155 transitions. [2020-10-14 23:24:59,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1155 transitions. [2020-10-14 23:24:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:24:59,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:59,837 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:59,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:24:59,837 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:59,837 INFO L82 PathProgramCache]: Analyzing trace with hash 121940344, now seen corresponding path program 11 times [2020-10-14 23:24:59,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:59,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862311535] [2020-10-14 23:24:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:01,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:25:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:02,150 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-14 23:25:02,332 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-14 23:25:02,492 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-14 23:25:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:02,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:02,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:02,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862311535] [2020-10-14 23:25:02,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:02,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:25:02,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240360550] [2020-10-14 23:25:02,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:25:02,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:02,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:25:02,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:02,971 INFO L87 Difference]: Start difference. First operand 1058 states and 1155 transitions. Second operand 22 states. [2020-10-14 23:25:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:06,117 INFO L93 Difference]: Finished difference Result 1334 states and 1450 transitions. [2020-10-14 23:25:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:25:06,117 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-14 23:25:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:06,123 INFO L225 Difference]: With dead ends: 1334 [2020-10-14 23:25:06,124 INFO L226 Difference]: Without dead ends: 1332 [2020-10-14 23:25:06,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:25:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-14 23:25:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1241. [2020-10-14 23:25:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-10-14 23:25:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2020-10-14 23:25:06,261 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 58 [2020-10-14 23:25:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:06,262 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2020-10-14 23:25:06,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:25:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2020-10-14 23:25:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:25:06,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:06,263 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:06,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:25:06,263 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1237026508, now seen corresponding path program 17 times [2020-10-14 23:25:06,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:06,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105088620] [2020-10-14 23:25:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:25:11,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 23:25:11,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:25:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:25:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:12,015 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-14 23:25:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:12,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:12,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105088620] [2020-10-14 23:25:12,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:12,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:25:12,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252586336] [2020-10-14 23:25:12,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:25:12,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:12,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:25:12,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:12,635 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand 21 states. [2020-10-14 23:25:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:14,921 INFO L93 Difference]: Finished difference Result 1335 states and 1451 transitions. [2020-10-14 23:25:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:25:14,922 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 23:25:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:14,927 INFO L225 Difference]: With dead ends: 1335 [2020-10-14 23:25:14,928 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 23:25:14,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:25:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 23:25:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1066. [2020-10-14 23:25:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-14 23:25:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1171 transitions. [2020-10-14 23:25:15,046 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1171 transitions. Word has length 58 [2020-10-14 23:25:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:15,046 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1171 transitions. [2020-10-14 23:25:15,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:25:15,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1171 transitions. [2020-10-14 23:25:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:25:15,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:15,048 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:15,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:25:15,048 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash -301706378, now seen corresponding path program 12 times [2020-10-14 23:25:15,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:15,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944888729] [2020-10-14 23:25:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:16,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:16,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:25:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-14 23:25:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:16,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:25:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:25:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:16,928 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-14 23:25:17,204 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-10-14 23:25:17,363 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-14 23:25:17,507 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-14 23:25:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:17,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:17,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:17,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944888729] [2020-10-14 23:25:17,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:17,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:25:17,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725773601] [2020-10-14 23:25:17,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:25:17,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:17,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:25:17,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:17,928 INFO L87 Difference]: Start difference. First operand 1066 states and 1171 transitions. Second operand 21 states. [2020-10-14 23:25:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:20,547 INFO L93 Difference]: Finished difference Result 1150 states and 1271 transitions. [2020-10-14 23:25:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:25:20,548 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 23:25:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:20,553 INFO L225 Difference]: With dead ends: 1150 [2020-10-14 23:25:20,553 INFO L226 Difference]: Without dead ends: 1137 [2020-10-14 23:25:20,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=109, Invalid=1151, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:25:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-10-14 23:25:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1000. [2020-10-14 23:25:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-14 23:25:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1103 transitions. [2020-10-14 23:25:20,669 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1103 transitions. Word has length 58 [2020-10-14 23:25:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:20,670 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1103 transitions. [2020-10-14 23:25:20,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:25:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1103 transitions. [2020-10-14 23:25:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:20,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:20,671 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:20,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:25:20,671 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:20,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1904247776, now seen corresponding path program 6 times [2020-10-14 23:25:20,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:20,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863482349] [2020-10-14 23:25:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:25:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:22,648 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-14 23:25:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:23,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:23,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:23,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:23,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:23,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:23,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:23,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863482349] [2020-10-14 23:25:23,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:23,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:25:23,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266671743] [2020-10-14 23:25:23,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:25:23,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:23,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:25:23,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:23,300 INFO L87 Difference]: Start difference. First operand 1000 states and 1103 transitions. Second operand 22 states. [2020-10-14 23:25:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:27,528 INFO L93 Difference]: Finished difference Result 1378 states and 1513 transitions. [2020-10-14 23:25:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:25:27,528 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-14 23:25:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:27,533 INFO L225 Difference]: With dead ends: 1378 [2020-10-14 23:25:27,534 INFO L226 Difference]: Without dead ends: 1376 [2020-10-14 23:25:27,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:25:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-14 23:25:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1111. [2020-10-14 23:25:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-14 23:25:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1215 transitions. [2020-10-14 23:25:27,667 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1215 transitions. Word has length 60 [2020-10-14 23:25:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:27,667 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1215 transitions. [2020-10-14 23:25:27,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:25:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1215 transitions. [2020-10-14 23:25:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:27,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:27,669 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:27,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 23:25:27,669 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash -789161612, now seen corresponding path program 13 times [2020-10-14 23:25:27,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:27,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477491632] [2020-10-14 23:25:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2627 [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:25:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:25:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:31,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:31,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:31,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:31,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:31,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:31,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477491632] [2020-10-14 23:25:31,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:31,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:25:31,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558427731] [2020-10-14 23:25:31,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:25:31,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:31,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:25:31,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:31,376 INFO L87 Difference]: Start difference. First operand 1111 states and 1215 transitions. Second operand 21 states. [2020-10-14 23:25:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:34,196 INFO L93 Difference]: Finished difference Result 1163 states and 1277 transitions. [2020-10-14 23:25:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:25:34,197 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 60 [2020-10-14 23:25:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:34,203 INFO L225 Difference]: With dead ends: 1163 [2020-10-14 23:25:34,204 INFO L226 Difference]: Without dead ends: 1151 [2020-10-14 23:25:34,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:25:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-14 23:25:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1000. [2020-10-14 23:25:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-14 23:25:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1103 transitions. [2020-10-14 23:25:34,328 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1103 transitions. Word has length 60 [2020-10-14 23:25:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:34,328 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1103 transitions. [2020-10-14 23:25:34,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:25:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1103 transitions. [2020-10-14 23:25:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:34,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:34,330 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:34,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 23:25:34,330 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash 923538336, now seen corresponding path program 14 times [2020-10-14 23:25:34,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:34,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507925950] [2020-10-14 23:25:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-10-14 23:25:36,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:36,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:36,984 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-14 23:25:37,155 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-14 23:25:37,350 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-14 23:25:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:38,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:38,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:38,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:38,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:38,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:38,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:38,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507925950] [2020-10-14 23:25:38,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:38,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:25:38,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706139550] [2020-10-14 23:25:38,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:25:38,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:38,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:25:38,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:38,086 INFO L87 Difference]: Start difference. First operand 1000 states and 1103 transitions. Second operand 23 states. [2020-10-14 23:25:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:42,469 INFO L93 Difference]: Finished difference Result 1485 states and 1641 transitions. [2020-10-14 23:25:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:25:42,470 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2020-10-14 23:25:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:42,475 INFO L225 Difference]: With dead ends: 1485 [2020-10-14 23:25:42,475 INFO L226 Difference]: Without dead ends: 1483 [2020-10-14 23:25:42,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=122, Invalid=1518, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:25:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-10-14 23:25:42,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1074. [2020-10-14 23:25:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-14 23:25:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1178 transitions. [2020-10-14 23:25:42,613 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1178 transitions. Word has length 60 [2020-10-14 23:25:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:42,614 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1178 transitions. [2020-10-14 23:25:42,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:25:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1178 transitions. [2020-10-14 23:25:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:42,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:42,615 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:42,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 23:25:42,615 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash 108231666, now seen corresponding path program 18 times [2020-10-14 23:25:42,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:42,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933296034] [2020-10-14 23:25:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2501 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:25:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:45,654 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-14 23:25:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:46,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:46,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933296034] [2020-10-14 23:25:46,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:46,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:25:46,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742454914] [2020-10-14 23:25:46,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:25:46,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:46,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:25:46,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:46,235 INFO L87 Difference]: Start difference. First operand 1074 states and 1178 transitions. Second operand 21 states.