/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:53:53,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:53:53,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:53:53,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:53:53,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:53:53,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:53:53,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:53:53,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:53:53,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:53:53,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:53:53,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:53:53,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:53:53,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:53:53,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:53:53,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:53:53,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:53:53,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:53:53,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:53:53,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:53:53,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:53:53,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:53:53,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:53:53,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:53:53,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:53:53,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:53:53,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:53:53,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:53:53,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:53:53,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:53:53,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:53:53,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:53:53,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:53:53,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:53:53,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:53:53,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:53:53,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:53:53,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:53:53,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:53:53,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:53:53,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:53:53,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:53:53,192 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 04:53:53,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:53:53,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:53:53,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:53:53,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:53:53,215 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:53:53,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:53:53,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:53:53,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:53:53,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:53:53,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:53:53,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:53:53,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:53:53,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:53:53,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:53:53,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:53:53,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:53:53,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:53:53,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:53:53,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:53:53,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:53:53,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:53:53,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:53:53,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:53:53,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:53:53,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:53:53,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:53:53,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:53:53,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:53:53,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:53:53,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:53:53,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:53:53,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:53:53,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:53:53,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:53:53,573 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:53:53,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2020-10-14 04:53:53,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1159646d8/9bc34b481cd74fe38b9d633173ab65d2/FLAG9c7b619a7 [2020-10-14 04:53:54,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:53:54,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/process_queue.i [2020-10-14 04:53:54,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1159646d8/9bc34b481cd74fe38b9d633173ab65d2/FLAG9c7b619a7 [2020-10-14 04:53:54,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1159646d8/9bc34b481cd74fe38b9d633173ab65d2 [2020-10-14 04:53:54,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:53:54,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:53:54,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:53:54,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:53:54,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:53:54,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:53:54" (1/1) ... [2020-10-14 04:53:54,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9211b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:54, skipping insertion in model container [2020-10-14 04:53:54,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:53:54" (1/1) ... [2020-10-14 04:53:54,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:53:54,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:53:54,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:53:55,002 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:53:55,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:53:55,118 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:53:55,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55 WrapperNode [2020-10-14 04:53:55,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:53:55,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:53:55,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:53:55,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:53:55,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (1/1) ... [2020-10-14 04:53:55,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:53:55,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:53:55,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:53:55,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:53:55,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (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 04:53:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:53:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:53:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:53:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:53:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure run_process [2020-10-14 04:53:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-14 04:53:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_next [2020-10-14 04:53:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure check_queue [2020-10-14 04:53:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:53:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:53:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:53:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:53:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:53:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:53:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:53:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:53:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:53:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:53:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:53:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:53:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:53:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:53:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:53:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:53:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:53:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:53:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:53:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:53:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:53:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:53:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:53:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:53:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:53:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:53:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:53:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:53:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:53:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:53:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:53:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:53:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:53:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:53:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:53:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:53:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:53:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:53:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:53:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:53:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:53:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:53:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:53:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:53:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:53:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:53:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:53:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:53:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:53:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:53:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:53:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:53:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:53:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:53:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:53:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:53:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:53:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:53:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:53:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:53:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure run_process [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure choose_next [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:53:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure check_queue [2020-10-14 04:53:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:53:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:53:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:53:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 04:53:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:53:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:53:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:53:55,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:53:55,784 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 04:53:55,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:53:55 BoogieIcfgContainer [2020-10-14 04:53:55,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:53:55,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:53:55,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:53:55,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:53:55,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:53:54" (1/3) ... [2020-10-14 04:53:55,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375faf12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:53:55, skipping insertion in model container [2020-10-14 04:53:55,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:53:55" (2/3) ... [2020-10-14 04:53:55,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375faf12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:53:55, skipping insertion in model container [2020-10-14 04:53:55,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:53:55" (3/3) ... [2020-10-14 04:53:55,802 INFO L109 eAbstractionObserver]: Analyzing ICFG process_queue.i [2020-10-14 04:53:55,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:53:55,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:53:55,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:53:55,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:53:55,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:53:55,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:53:55,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:53:55,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:53:55,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:53:55,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:53:55,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:53:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-14 04:53:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:53:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:55,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:55,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash -699499398, now seen corresponding path program 1 times [2020-10-14 04:53:55,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:55,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687387123] [2020-10-14 04:53:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:56,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 04:53:56,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 04:53:56,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:56,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:53:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:53:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:53:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:56,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:56,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:53:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:56,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:56,589 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 04:53:56,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687387123] [2020-10-14 04:53:56,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:56,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:53:56,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081521986] [2020-10-14 04:53:56,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:53:56,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:56,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:53:56,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:53:56,617 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 7 states. [2020-10-14 04:53:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:56,977 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2020-10-14 04:53:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:53:56,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-14 04:53:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:56,992 INFO L225 Difference]: With dead ends: 100 [2020-10-14 04:53:56,992 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 04:53:56,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:53:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 04:53:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 04:53:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 04:53:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-14 04:53:57,052 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 17 [2020-10-14 04:53:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:57,053 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-14 04:53:57,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:53:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-14 04:53:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:53:57,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:57,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:57,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:53:57,055 INFO L427 AbstractCegarLoop]: === Iteration 2 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:57,056 INFO L82 PathProgramCache]: Analyzing trace with hash -436646864, now seen corresponding path program 1 times [2020-10-14 04:53:57,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:57,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829311933] [2020-10-14 04:53:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:57,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:57,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:53:57,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-14 04:53:57,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:57,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:57,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:53:57,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:53:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:53:57,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:57,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:53:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:57,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:57,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:53:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:53:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:53:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:53:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:57,994 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 04:53:57,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829311933] [2020-10-14 04:53:57,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:53:57,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 04:53:57,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111073300] [2020-10-14 04:53:57,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:53:57,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:57,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:53:57,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:53:57,998 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 12 states. [2020-10-14 04:53:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:58,768 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2020-10-14 04:53:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:53:58,769 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-14 04:53:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:58,772 INFO L225 Difference]: With dead ends: 120 [2020-10-14 04:53:58,772 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 04:53:58,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:53:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 04:53:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2020-10-14 04:53:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 04:53:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2020-10-14 04:53:58,791 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 20 [2020-10-14 04:53:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:58,792 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2020-10-14 04:53:58,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:53:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2020-10-14 04:53:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:53:58,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:58,794 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] [2020-10-14 04:53:58,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:53:58,795 INFO L427 AbstractCegarLoop]: === Iteration 3 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:58,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1313067226, now seen corresponding path program 1 times [2020-10-14 04:53:58,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:58,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4560927] [2020-10-14 04:53:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:59,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:53:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 04:53:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:53:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:53:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:59,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:53:59,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:59,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:59,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:53:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:59,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:59,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:53:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:59,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:53:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:53:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:53:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:53:59,465 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 04:53:59,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4560927] [2020-10-14 04:53:59,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:59,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:53:59,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198103027] [2020-10-14 04:53:59,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:53:59,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:59,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:53:59,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:53:59,468 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 12 states. [2020-10-14 04:54:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:00,567 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2020-10-14 04:54:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:54:00,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-14 04:54:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:00,572 INFO L225 Difference]: With dead ends: 140 [2020-10-14 04:54:00,572 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 04:54:00,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:54:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 04:54:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-10-14 04:54:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 04:54:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-14 04:54:00,608 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 23 [2020-10-14 04:54:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:00,609 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-14 04:54:00,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-14 04:54:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 04:54:00,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:00,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:00,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:54:00,613 INFO L427 AbstractCegarLoop]: === Iteration 4 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash 383010943, now seen corresponding path program 1 times [2020-10-14 04:54:00,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:00,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68536527] [2020-10-14 04:54:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:02,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 04:54:02,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-10-14 04:54:02,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:02,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:54:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:54:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:02,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:02,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:02,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:02,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:02,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:02,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:02,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:02,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:54:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:02,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:02,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:02,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:02,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:02,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:02,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:54:02,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:02,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:54:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:02,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 04:54:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:54:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:54:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:02,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68536527] [2020-10-14 04:54:02,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:02,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:54:02,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914545402] [2020-10-14 04:54:02,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:54:02,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:02,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:54:02,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:02,479 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 10 states. [2020-10-14 04:54:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:02,927 INFO L93 Difference]: Finished difference Result 158 states and 202 transitions. [2020-10-14 04:54:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:54:02,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-14 04:54:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:02,929 INFO L225 Difference]: With dead ends: 158 [2020-10-14 04:54:02,929 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 04:54:02,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:54:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 04:54:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-10-14 04:54:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 04:54:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2020-10-14 04:54:02,946 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 35 [2020-10-14 04:54:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:02,946 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2020-10-14 04:54:02,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:54:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2020-10-14 04:54:02,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:54:02,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:02,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:02,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:54:02,948 INFO L427 AbstractCegarLoop]: === Iteration 5 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:02,949 INFO L82 PathProgramCache]: Analyzing trace with hash -762406251, now seen corresponding path program 1 times [2020-10-14 04:54:02,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:02,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545772511] [2020-10-14 04:54:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:03,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:03,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:54:03,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 04:54:03,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:03,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:54:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:54:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:03,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:03,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:03,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:03,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:03,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:03,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:03,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:03,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:54:03,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:03,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:54:03,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:03,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:03,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:03,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:03,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:54:03,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:03,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:03,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:54:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:54:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:54:03,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:03,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:54:03,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545772511] [2020-10-14 04:54:03,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:03,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:54:03,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146797222] [2020-10-14 04:54:03,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:54:03,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:03,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:54:03,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:54:03,706 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand 13 states. [2020-10-14 04:54:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:04,589 INFO L93 Difference]: Finished difference Result 217 states and 287 transitions. [2020-10-14 04:54:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:54:04,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:54:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:04,592 INFO L225 Difference]: With dead ends: 217 [2020-10-14 04:54:04,592 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 04:54:04,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:54:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 04:54:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-14 04:54:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 04:54:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 180 transitions. [2020-10-14 04:54:04,612 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 180 transitions. Word has length 38 [2020-10-14 04:54:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:04,613 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 180 transitions. [2020-10-14 04:54:04,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:54:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2020-10-14 04:54:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:54:04,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:04,615 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:04,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:54:04,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:04,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1053709227, now seen corresponding path program 2 times [2020-10-14 04:54:04,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:04,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347241836] [2020-10-14 04:54:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:04,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:06,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:06,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 04:54:06,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2178 [2020-10-14 04:54:06,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:06,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:54:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:54:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:07,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:07,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:07,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:07,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:54:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:07,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:54:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:07,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:07,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:07,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:07,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:54:07,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:07,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:54:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:54:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:07,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:07,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:07,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:54:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:07,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:07,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347241836] [2020-10-14 04:54:07,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:07,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:54:07,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521552914] [2020-10-14 04:54:07,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:54:07,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:54:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:54:07,523 INFO L87 Difference]: Start difference. First operand 137 states and 180 transitions. Second operand 21 states. [2020-10-14 04:54:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:10,043 INFO L93 Difference]: Finished difference Result 212 states and 273 transitions. [2020-10-14 04:54:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 04:54:10,044 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-10-14 04:54:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:10,048 INFO L225 Difference]: With dead ends: 212 [2020-10-14 04:54:10,048 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 04:54:10,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=278, Invalid=1792, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 04:54:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 04:54:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 174. [2020-10-14 04:54:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 04:54:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-10-14 04:54:10,088 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 41 [2020-10-14 04:54:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:10,089 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-10-14 04:54:10,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:54:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-10-14 04:54:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:54:10,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:10,096 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:10,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:54:10,096 INFO L427 AbstractCegarLoop]: === Iteration 7 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:10,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash 868237973, now seen corresponding path program 3 times [2020-10-14 04:54:10,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:10,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143740098] [2020-10-14 04:54:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:10,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:11,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:11,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:54:11,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-14 04:54:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:11,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:54:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:54:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:12,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:54:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:12,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:54:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:12,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:12,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:12,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:12,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:12,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:54:12,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:12,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:54:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:54:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:12,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:12,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:12,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:54:12,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:12,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:12,838 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-14 04:54:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:12,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143740098] [2020-10-14 04:54:12,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:12,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:54:12,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466541447] [2020-10-14 04:54:12,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:54:12,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:54:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:54:12,859 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 21 states. [2020-10-14 04:54:13,324 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 04:54:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:16,321 INFO L93 Difference]: Finished difference Result 495 states and 692 transitions. [2020-10-14 04:54:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 04:54:16,327 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-14 04:54:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:16,336 INFO L225 Difference]: With dead ends: 495 [2020-10-14 04:54:16,336 INFO L226 Difference]: Without dead ends: 367 [2020-10-14 04:54:16,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=264, Invalid=1806, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 04:54:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-14 04:54:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 349. [2020-10-14 04:54:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-14 04:54:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2020-10-14 04:54:16,394 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 44 [2020-10-14 04:54:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:16,395 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2020-10-14 04:54:16,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:54:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2020-10-14 04:54:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:54:16,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:16,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:16,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:54:16,397 INFO L427 AbstractCegarLoop]: === Iteration 8 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash -775608654, now seen corresponding path program 1 times [2020-10-14 04:54:16,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:16,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828974925] [2020-10-14 04:54:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 04:54:17,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-14 04:54:17,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:54:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:54:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:17,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:17,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:17,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:54:17,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:17,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:54:17,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:54:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:54:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:54:17,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:54:17,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:54:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 04:54:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:54:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:17,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828974925] [2020-10-14 04:54:17,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:17,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:54:17,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639333294] [2020-10-14 04:54:17,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:54:17,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:54:17,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:17,670 INFO L87 Difference]: Start difference. First operand 349 states and 487 transitions. Second operand 11 states. [2020-10-14 04:54:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:18,447 INFO L93 Difference]: Finished difference Result 661 states and 941 transitions. [2020-10-14 04:54:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:18,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-14 04:54:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:18,451 INFO L225 Difference]: With dead ends: 661 [2020-10-14 04:54:18,452 INFO L226 Difference]: Without dead ends: 358 [2020-10-14 04:54:18,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-14 04:54:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2020-10-14 04:54:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-14 04:54:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 509 transitions. [2020-10-14 04:54:18,487 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 509 transitions. Word has length 50 [2020-10-14 04:54:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:18,487 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 509 transitions. [2020-10-14 04:54:18,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:54:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 509 transitions. [2020-10-14 04:54:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:54:18,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:18,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:18,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:54:18,489 INFO L427 AbstractCegarLoop]: === Iteration 9 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:18,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2006943180, now seen corresponding path program 1 times [2020-10-14 04:54:18,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:18,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988532361] [2020-10-14 04:54:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 04:54:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:54:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4376 [2020-10-14 04:54:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:54:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 04:54:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:54:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:22,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:22,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:22,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:22,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:54:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:22,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:22,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:54:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:23,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:54:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:54:23,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:23,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:54:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:54:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:23,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:54:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:54:23,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988532361] [2020-10-14 04:54:23,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:23,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:23,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099713660] [2020-10-14 04:54:23,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:23,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:23,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:23,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:23,166 INFO L87 Difference]: Start difference. First operand 357 states and 509 transitions. Second operand 12 states. [2020-10-14 04:54:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:24,085 INFO L93 Difference]: Finished difference Result 571 states and 827 transitions. [2020-10-14 04:54:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:54:24,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-14 04:54:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:24,089 INFO L225 Difference]: With dead ends: 571 [2020-10-14 04:54:24,089 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 04:54:24,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:54:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 04:54:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-10-14 04:54:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-14 04:54:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 204 transitions. [2020-10-14 04:54:24,114 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 204 transitions. Word has length 51 [2020-10-14 04:54:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:24,115 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 204 transitions. [2020-10-14 04:54:24,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 204 transitions. [2020-10-14 04:54:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:54:24,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:24,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:24,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:54:24,117 INFO L427 AbstractCegarLoop]: === Iteration 10 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash 293879410, now seen corresponding path program 1 times [2020-10-14 04:54:24,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:24,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634646856] [2020-10-14 04:54:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 04:54:24,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:54:24,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 04:54:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:54:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:24,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:24,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:24,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:24,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:24,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:24,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:54:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:54:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:54:24,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:54:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:54:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:54:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:24,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:24,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:54:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:54:24,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634646856] [2020-10-14 04:54:24,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:54:24,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:54:24,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903897624] [2020-10-14 04:54:24,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:54:24,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:24,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:54:24,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:54:24,311 INFO L87 Difference]: Start difference. First operand 160 states and 204 transitions. Second operand 5 states. [2020-10-14 04:54:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:24,482 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-10-14 04:54:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:54:24,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-14 04:54:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:24,485 INFO L225 Difference]: With dead ends: 287 [2020-10-14 04:54:24,485 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 04:54:24,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 04:54:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-14 04:54:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 04:54:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2020-10-14 04:54:24,507 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 51 [2020-10-14 04:54:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:24,508 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2020-10-14 04:54:24,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:54:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2020-10-14 04:54:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:54:24,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:24,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:24,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:54:24,510 INFO L427 AbstractCegarLoop]: === Iteration 11 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:24,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1322229528, now seen corresponding path program 1 times [2020-10-14 04:54:24,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:24,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813561285] [2020-10-14 04:54:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:27,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:54:27,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3380 [2020-10-14 04:54:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:27,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:54:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:54:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:27,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:27,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:27,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:28,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:28,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:28,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:54:28,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:28,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:54:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:28,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:54:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:54:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:54:28,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:54:28,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:28,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:28,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:28,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:54:28,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 04:54:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:28,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:28,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:28,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:28,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:54:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:28,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813561285] [2020-10-14 04:54:28,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:28,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:28,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425404883] [2020-10-14 04:54:28,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:28,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:28,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:28,276 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand 12 states. [2020-10-14 04:54:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:29,196 INFO L93 Difference]: Finished difference Result 296 states and 382 transitions. [2020-10-14 04:54:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:54:29,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-14 04:54:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:29,199 INFO L225 Difference]: With dead ends: 296 [2020-10-14 04:54:29,200 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 04:54:29,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:54:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 04:54:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 154. [2020-10-14 04:54:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 04:54:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 193 transitions. [2020-10-14 04:54:29,224 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 193 transitions. Word has length 54 [2020-10-14 04:54:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:29,225 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 193 transitions. [2020-10-14 04:54:29,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 193 transitions. [2020-10-14 04:54:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 04:54:29,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:29,227 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:29,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:54:29,228 INFO L427 AbstractCegarLoop]: === Iteration 12 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 517194682, now seen corresponding path program 4 times [2020-10-14 04:54:29,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:29,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343676923] [2020-10-14 04:54:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:34,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 04:54:34,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:54:34,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:54:34,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:34,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 04:54:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:54:34,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:34,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:34,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:34,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:34,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:34,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:34,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:34,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:34,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:54:34,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:34,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:34,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:34,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:54:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:54:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:35,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:35,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:35,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:54:35,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:35,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:54:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:35,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:54:35,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:54:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:35,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:54:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:54:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:35,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:35,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:35,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:35,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:54:35,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:35,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:35,744 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-14 04:54:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 49 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 04:54:35,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343676923] [2020-10-14 04:54:35,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:35,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 04:54:35,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509542717] [2020-10-14 04:54:35,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 04:54:35,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:35,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 04:54:35,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:54:35,967 INFO L87 Difference]: Start difference. First operand 154 states and 193 transitions. Second operand 25 states. [2020-10-14 04:54:36,618 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-14 04:54:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:39,981 INFO L93 Difference]: Finished difference Result 221 states and 279 transitions. [2020-10-14 04:54:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 04:54:39,982 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 65 [2020-10-14 04:54:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:39,984 INFO L225 Difference]: With dead ends: 221 [2020-10-14 04:54:39,984 INFO L226 Difference]: Without dead ends: 219 [2020-10-14 04:54:39,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=335, Invalid=2421, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 04:54:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-14 04:54:40,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-10-14 04:54:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 04:54:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 224 transitions. [2020-10-14 04:54:40,015 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 224 transitions. Word has length 65 [2020-10-14 04:54:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:40,016 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 224 transitions. [2020-10-14 04:54:40,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 04:54:40,016 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 224 transitions. [2020-10-14 04:54:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 04:54:40,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:40,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:40,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:54:40,018 INFO L427 AbstractCegarLoop]: === Iteration 13 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash 900911611, now seen corresponding path program 2 times [2020-10-14 04:54:40,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:40,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469411484] [2020-10-14 04:54:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:54:40,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-14 04:54:40,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:40,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:54:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:54:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:40,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:40,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:40,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:40,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:40,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:40,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:54:40,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:40,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:54:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:40,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:54:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:40,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:54:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:54:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:40,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:41,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:41,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:54:41,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:54:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:41,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:54:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:54:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:41,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:41,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:41,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:54:41,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:41,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:41,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:41,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:41,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:54:41,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 04:54:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:41,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:54:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:41,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:41,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 04:54:41,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469411484] [2020-10-14 04:54:41,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:41,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:54:41,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095897478] [2020-10-14 04:54:41,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:54:41,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:41,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:54:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:41,093 INFO L87 Difference]: Start difference. First operand 178 states and 224 transitions. Second operand 14 states. [2020-10-14 04:54:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:41,906 INFO L93 Difference]: Finished difference Result 353 states and 450 transitions. [2020-10-14 04:54:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:54:41,908 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-14 04:54:41,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:41,909 INFO L225 Difference]: With dead ends: 353 [2020-10-14 04:54:41,910 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 04:54:41,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:54:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 04:54:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2020-10-14 04:54:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-14 04:54:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 248 transitions. [2020-10-14 04:54:41,928 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 248 transitions. Word has length 66 [2020-10-14 04:54:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:41,929 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 248 transitions. [2020-10-14 04:54:41,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:54:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 248 transitions. [2020-10-14 04:54:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 04:54:41,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:41,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:41,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:54:41,930 INFO L427 AbstractCegarLoop]: === Iteration 14 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash 2020931159, now seen corresponding path program 2 times [2020-10-14 04:54:41,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:41,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427307058] [2020-10-14 04:54:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:46,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:54:46,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:54:46,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:46,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:54:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 04:54:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:47,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:47,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:54:47,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:47,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:54:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:54:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:54:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:47,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:54:47,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:54:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:54:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 04:54:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:54:47,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:54:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 04:54:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:47,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:54:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 04:54:47,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427307058] [2020-10-14 04:54:47,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:47,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:54:47,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628658068] [2020-10-14 04:54:47,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:54:47,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:47,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:54:47,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:54:47,360 INFO L87 Difference]: Start difference. First operand 198 states and 248 transitions. Second operand 15 states. [2020-10-14 04:54:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:48,339 INFO L93 Difference]: Finished difference Result 378 states and 483 transitions. [2020-10-14 04:54:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:54:48,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-14 04:54:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:48,343 INFO L225 Difference]: With dead ends: 378 [2020-10-14 04:54:48,343 INFO L226 Difference]: Without dead ends: 215 [2020-10-14 04:54:48,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:54:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-14 04:54:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 210. [2020-10-14 04:54:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 04:54:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 266 transitions. [2020-10-14 04:54:48,366 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 266 transitions. Word has length 68 [2020-10-14 04:54:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:48,367 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 266 transitions. [2020-10-14 04:54:48,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:54:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 266 transitions. [2020-10-14 04:54:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 04:54:48,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:48,372 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:48,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:54:48,372 INFO L427 AbstractCegarLoop]: === Iteration 15 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1702933776, now seen corresponding path program 5 times [2020-10-14 04:54:48,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:48,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786526439] [2020-10-14 04:54:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:53,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:54:53,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:54:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:54:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:53,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 04:54:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:54:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:53,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:53,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:53,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:53,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:54:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:54:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:54:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:53,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:54:53,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:54:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:53,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:54:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:54,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:54:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:54,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:54:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:54,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:54:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:54:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:54,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:54:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:54,720 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-14 04:54:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 04:54:54,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786526439] [2020-10-14 04:54:54,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:54,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 04:54:54,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347491236] [2020-10-14 04:54:54,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 04:54:54,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:54,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 04:54:54,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:54:54,750 INFO L87 Difference]: Start difference. First operand 210 states and 266 transitions. Second operand 25 states. [2020-10-14 04:54:55,283 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-14 04:54:57,066 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2020-10-14 04:54:58,103 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-14 04:54:59,546 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 04:54:59,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:59,861 INFO L93 Difference]: Finished difference Result 477 states and 622 transitions. [2020-10-14 04:54:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 04:54:59,862 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 68 [2020-10-14 04:54:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:59,865 INFO L225 Difference]: With dead ends: 477 [2020-10-14 04:54:59,865 INFO L226 Difference]: Without dead ends: 302 [2020-10-14 04:54:59,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=380, Invalid=2812, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 04:54:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-14 04:54:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 233. [2020-10-14 04:54:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-14 04:54:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 294 transitions. [2020-10-14 04:54:59,891 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 294 transitions. Word has length 68 [2020-10-14 04:54:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:59,892 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 294 transitions. [2020-10-14 04:54:59,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 04:54:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 294 transitions. [2020-10-14 04:54:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 04:54:59,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:59,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:59,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:54:59,894 INFO L427 AbstractCegarLoop]: === Iteration 16 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:59,894 INFO L82 PathProgramCache]: Analyzing trace with hash -188976337, now seen corresponding path program 3 times [2020-10-14 04:54:59,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:59,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282737861] [2020-10-14 04:54:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:55:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:05,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:05,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:55:05,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:05,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:55:05,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:55:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:55:05,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:55:05,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:05,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:05,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:55:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:55:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 04:55:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:55:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:05,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:55:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:55:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 04:55:05,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282737861] [2020-10-14 04:55:05,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:05,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:55:05,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516286352] [2020-10-14 04:55:05,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:55:05,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:55:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:55:05,722 INFO L87 Difference]: Start difference. First operand 233 states and 294 transitions. Second operand 17 states. [2020-10-14 04:55:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:07,113 INFO L93 Difference]: Finished difference Result 471 states and 612 transitions. [2020-10-14 04:55:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:55:07,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2020-10-14 04:55:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:07,116 INFO L225 Difference]: With dead ends: 471 [2020-10-14 04:55:07,121 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 04:55:07,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:55:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 04:55:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 270. [2020-10-14 04:55:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-14 04:55:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 351 transitions. [2020-10-14 04:55:07,158 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 351 transitions. Word has length 69 [2020-10-14 04:55:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:07,159 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 351 transitions. [2020-10-14 04:55:07,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:55:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 351 transitions. [2020-10-14 04:55:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 04:55:07,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:07,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:07,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:55:07,162 INFO L427 AbstractCegarLoop]: === Iteration 17 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:07,163 INFO L82 PathProgramCache]: Analyzing trace with hash 285887973, now seen corresponding path program 3 times [2020-10-14 04:55:07,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:07,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638217545] [2020-10-14 04:55:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:55:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:12,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:55:12,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:55:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:12,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:55:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:12,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:55:12,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:12,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:55:12,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:55:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:55:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 04:55:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:55:12,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:55:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:55:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 04:55:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:12,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:12,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:55:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 04:55:12,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638217545] [2020-10-14 04:55:12,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:12,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:12,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051798910] [2020-10-14 04:55:12,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:12,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:12,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:12,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:12,626 INFO L87 Difference]: Start difference. First operand 270 states and 351 transitions. Second operand 15 states. [2020-10-14 04:55:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:13,553 INFO L93 Difference]: Finished difference Result 480 states and 619 transitions. [2020-10-14 04:55:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:13,554 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-14 04:55:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:13,558 INFO L225 Difference]: With dead ends: 480 [2020-10-14 04:55:13,558 INFO L226 Difference]: Without dead ends: 274 [2020-10-14 04:55:13,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:55:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-14 04:55:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2020-10-14 04:55:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-14 04:55:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 332 transitions. [2020-10-14 04:55:13,606 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 332 transitions. Word has length 71 [2020-10-14 04:55:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:13,606 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 332 transitions. [2020-10-14 04:55:13,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:13,607 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 332 transitions. [2020-10-14 04:55:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 04:55:13,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:13,608 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:13,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:55:13,609 INFO L427 AbstractCegarLoop]: === Iteration 18 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1230998491, now seen corresponding path program 4 times [2020-10-14 04:55:13,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:13,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448796811] [2020-10-14 04:55:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2230 [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:55:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:55:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:16,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:16,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:55:16,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:55:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:16,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:55:16,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:55:16,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:55:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 04:55:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 04:55:16,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448796811] [2020-10-14 04:55:16,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:16,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:55:16,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075105728] [2020-10-14 04:55:16,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:55:16,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:55:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:16,826 INFO L87 Difference]: Start difference. First operand 257 states and 332 transitions. Second operand 20 states. [2020-10-14 04:55:19,422 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-14 04:55:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:19,581 INFO L93 Difference]: Finished difference Result 627 states and 838 transitions. [2020-10-14 04:55:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:55:19,582 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-14 04:55:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:19,585 INFO L225 Difference]: With dead ends: 627 [2020-10-14 04:55:19,585 INFO L226 Difference]: Without dead ends: 405 [2020-10-14 04:55:19,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 04:55:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-14 04:55:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 372. [2020-10-14 04:55:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-14 04:55:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 498 transitions. [2020-10-14 04:55:19,620 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 498 transitions. Word has length 74 [2020-10-14 04:55:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:19,621 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 498 transitions. [2020-10-14 04:55:19,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:55:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 498 transitions. [2020-10-14 04:55:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 04:55:19,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:19,622 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:19,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:55:19,623 INFO L427 AbstractCegarLoop]: === Iteration 19 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:19,623 INFO L82 PathProgramCache]: Analyzing trace with hash -475760691, now seen corresponding path program 2 times [2020-10-14 04:55:19,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:19,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083118679] [2020-10-14 04:55:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 04:55:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:24,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:24,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:24,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:55:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:55:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 04:55:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:55:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 04:55:25,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083118679] [2020-10-14 04:55:25,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:25,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:55:25,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389870409] [2020-10-14 04:55:25,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:55:25,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:55:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:55:25,003 INFO L87 Difference]: Start difference. First operand 372 states and 498 transitions. Second operand 12 states. [2020-10-14 04:55:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:25,966 INFO L93 Difference]: Finished difference Result 586 states and 790 transitions. [2020-10-14 04:55:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:55:25,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-14 04:55:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:25,969 INFO L225 Difference]: With dead ends: 586 [2020-10-14 04:55:25,969 INFO L226 Difference]: Without dead ends: 395 [2020-10-14 04:55:25,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:55:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-14 04:55:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2020-10-14 04:55:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-14 04:55:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 543 transitions. [2020-10-14 04:55:26,007 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 543 transitions. Word has length 75 [2020-10-14 04:55:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:26,007 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 543 transitions. [2020-10-14 04:55:26,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:55:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 543 transitions. [2020-10-14 04:55:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 04:55:26,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:26,008 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:26,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:55:26,009 INFO L427 AbstractCegarLoop]: === Iteration 20 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:26,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:26,009 INFO L82 PathProgramCache]: Analyzing trace with hash -938303649, now seen corresponding path program 1 times [2020-10-14 04:55:26,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:26,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380819767] [2020-10-14 04:55:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:55:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:29,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:29,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:29,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:29,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:29,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:29,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:55:29,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:55:29,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:55:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:55:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 04:55:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:29,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 04:55:30,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380819767] [2020-10-14 04:55:30,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:30,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:55:30,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100410695] [2020-10-14 04:55:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:55:30,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:30,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:55:30,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:55:30,023 INFO L87 Difference]: Start difference. First operand 394 states and 543 transitions. Second operand 19 states. [2020-10-14 04:55:30,870 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-14 04:55:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:32,283 INFO L93 Difference]: Finished difference Result 529 states and 756 transitions. [2020-10-14 04:55:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 04:55:32,284 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 75 [2020-10-14 04:55:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:32,289 INFO L225 Difference]: With dead ends: 529 [2020-10-14 04:55:32,289 INFO L226 Difference]: Without dead ends: 527 [2020-10-14 04:55:32,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 04:55:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-14 04:55:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 485. [2020-10-14 04:55:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-14 04:55:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 692 transitions. [2020-10-14 04:55:32,338 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 692 transitions. Word has length 75 [2020-10-14 04:55:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:32,338 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 692 transitions. [2020-10-14 04:55:32,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:55:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 692 transitions. [2020-10-14 04:55:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 04:55:32,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:32,340 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:32,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:55:32,340 INFO L427 AbstractCegarLoop]: === Iteration 21 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2053548229, now seen corresponding path program 5 times [2020-10-14 04:55:32,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:32,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11166691] [2020-10-14 04:55:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:55:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 04:55:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:55:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:55:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:37,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:37,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:37,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:55:37,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:37,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:37,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:55:37,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:55:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 04:55:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 04:55:38,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11166691] [2020-10-14 04:55:38,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:38,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:55:38,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127513649] [2020-10-14 04:55:38,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:55:38,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:38,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:55:38,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:55:38,015 INFO L87 Difference]: Start difference. First operand 485 states and 692 transitions. Second operand 16 states. [2020-10-14 04:55:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:39,627 INFO L93 Difference]: Finished difference Result 843 states and 1209 transitions. [2020-10-14 04:55:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:39,628 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2020-10-14 04:55:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:39,631 INFO L225 Difference]: With dead ends: 843 [2020-10-14 04:55:39,631 INFO L226 Difference]: Without dead ends: 497 [2020-10-14 04:55:39,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:55:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-14 04:55:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 485. [2020-10-14 04:55:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-14 04:55:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 691 transitions. [2020-10-14 04:55:39,692 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 691 transitions. Word has length 77 [2020-10-14 04:55:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:39,692 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 691 transitions. [2020-10-14 04:55:39,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:55:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 691 transitions. [2020-10-14 04:55:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 04:55:39,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:39,695 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:39,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:55:39,696 INFO L427 AbstractCegarLoop]: === Iteration 22 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash -202261285, now seen corresponding path program 3 times [2020-10-14 04:55:39,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:39,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71822590] [2020-10-14 04:55:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2217 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:41,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:41,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:41,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:41,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:41,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:41,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:41,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:41,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:41,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:41,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:41,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:41,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:42,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:42,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:55:42,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:55:42,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:42,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:55:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:55:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:55:42,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 04:55:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:42,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:42,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:42,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 04:55:42,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71822590] [2020-10-14 04:55:42,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:42,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:55:42,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480149987] [2020-10-14 04:55:42,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:55:42,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:55:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:55:42,042 INFO L87 Difference]: Start difference. First operand 485 states and 691 transitions. Second operand 6 states. [2020-10-14 04:55:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:42,333 INFO L93 Difference]: Finished difference Result 887 states and 1290 transitions. [2020-10-14 04:55:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:55:42,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-14 04:55:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:42,339 INFO L225 Difference]: With dead ends: 887 [2020-10-14 04:55:42,340 INFO L226 Difference]: Without dead ends: 475 [2020-10-14 04:55:42,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:55:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-14 04:55:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2020-10-14 04:55:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 04:55:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 659 transitions. [2020-10-14 04:55:42,385 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 659 transitions. Word has length 78 [2020-10-14 04:55:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:42,385 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 659 transitions. [2020-10-14 04:55:42,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:55:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 659 transitions. [2020-10-14 04:55:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 04:55:42,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:42,387 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:42,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:55:42,387 INFO L427 AbstractCegarLoop]: === Iteration 23 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1352991925, now seen corresponding path program 2 times [2020-10-14 04:55:42,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:42,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542114642] [2020-10-14 04:55:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:43,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:47,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:55:47,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:55:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:55:47,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:47,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 04:55:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:55:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:47,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:47,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:47,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:47,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:47,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:47,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:47,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:47,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:47,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:47,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:55:47,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:47,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:47,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:47,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:55:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:47,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:48,069 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-14 04:55:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:48,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:48,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:48,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:48,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:48,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:48,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:48,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:55:48,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 04:55:48,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:48,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:55:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:48,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 04:55:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:48,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:48,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:55:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 04:55:48,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542114642] [2020-10-14 04:55:48,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:48,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:55:48,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585994906] [2020-10-14 04:55:48,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:55:48,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:55:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:48,626 INFO L87 Difference]: Start difference. First operand 475 states and 659 transitions. Second operand 20 states. [2020-10-14 04:55:49,161 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-14 04:55:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:51,385 INFO L93 Difference]: Finished difference Result 802 states and 1110 transitions. [2020-10-14 04:55:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:55:51,388 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-10-14 04:55:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:51,391 INFO L225 Difference]: With dead ends: 802 [2020-10-14 04:55:51,391 INFO L226 Difference]: Without dead ends: 529 [2020-10-14 04:55:51,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:55:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-14 04:55:51,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 525. [2020-10-14 04:55:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-14 04:55:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 731 transitions. [2020-10-14 04:55:51,441 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 731 transitions. Word has length 78 [2020-10-14 04:55:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:51,441 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 731 transitions. [2020-10-14 04:55:51,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:55:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 731 transitions. [2020-10-14 04:55:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 04:55:51,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:51,443 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:51,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:55:51,443 INFO L427 AbstractCegarLoop]: === Iteration 24 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:51,444 INFO L82 PathProgramCache]: Analyzing trace with hash 220440541, now seen corresponding path program 3 times [2020-10-14 04:55:51,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:51,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448984444] [2020-10-14 04:55:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:56,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:55:56,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:56,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:55:56,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:56,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:55:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:55:56,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:55:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:55:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:56,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:55:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:55:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:55:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:55:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:55:56,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:56,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:55:56,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,039 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-14 04:55:57,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:55:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:55:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:55:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:55:57,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:55:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:55:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:55:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:55:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,413 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-14 04:55:57,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 04:55:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:55:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 04:55:57,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448984444] [2020-10-14 04:55:57,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:57,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:55:57,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900025473] [2020-10-14 04:55:57,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:55:57,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:55:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:55:57,632 INFO L87 Difference]: Start difference. First operand 525 states and 731 transitions. Second operand 17 states. [2020-10-14 04:55:57,992 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 04:55:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:59,421 INFO L93 Difference]: Finished difference Result 801 states and 1105 transitions. [2020-10-14 04:55:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:55:59,422 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2020-10-14 04:55:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:59,426 INFO L225 Difference]: With dead ends: 801 [2020-10-14 04:55:59,426 INFO L226 Difference]: Without dead ends: 528 [2020-10-14 04:55:59,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:55:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-14 04:55:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 518. [2020-10-14 04:55:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-14 04:55:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 712 transitions. [2020-10-14 04:55:59,471 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 712 transitions. Word has length 78 [2020-10-14 04:55:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:59,471 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 712 transitions. [2020-10-14 04:55:59,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:55:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 712 transitions. [2020-10-14 04:55:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 04:55:59,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:59,473 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:59,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:55:59,474 INFO L427 AbstractCegarLoop]: === Iteration 25 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:59,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:59,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2036094773, now seen corresponding path program 6 times [2020-10-14 04:55:59,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:59,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084696638] [2020-10-14 04:55:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:56:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 04:56:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:56:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:56:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:04,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:04,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:04,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:56:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:04,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:04,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:56:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:04,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:04,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:56:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:04,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:56:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 04:56:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:05,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 04:56:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:05,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:05,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 134 proven. 29 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 04:56:05,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084696638] [2020-10-14 04:56:05,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:05,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:56:05,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136734797] [2020-10-14 04:56:05,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:56:05,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:56:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:56:05,233 INFO L87 Difference]: Start difference. First operand 518 states and 712 transitions. Second operand 19 states. [2020-10-14 04:56:05,553 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 04:56:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:07,083 INFO L93 Difference]: Finished difference Result 859 states and 1187 transitions. [2020-10-14 04:56:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:07,084 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-14 04:56:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:07,088 INFO L225 Difference]: With dead ends: 859 [2020-10-14 04:56:07,088 INFO L226 Difference]: Without dead ends: 589 [2020-10-14 04:56:07,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:56:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-10-14 04:56:07,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 518. [2020-10-14 04:56:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-14 04:56:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 710 transitions. [2020-10-14 04:56:07,150 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 710 transitions. Word has length 89 [2020-10-14 04:56:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:07,150 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 710 transitions. [2020-10-14 04:56:07,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:56:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 710 transitions. [2020-10-14 04:56:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 04:56:07,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:07,152 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:07,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:56:07,153 INFO L427 AbstractCegarLoop]: === Iteration 26 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:07,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:07,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1556096651, now seen corresponding path program 7 times [2020-10-14 04:56:07,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:07,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292832265] [2020-10-14 04:56:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:08,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:12,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:12,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 04:56:12,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:56:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 04:56:12,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:12,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 04:56:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 04:56:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:56:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:56:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:13,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:56:13,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:13,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:13,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:56:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:13,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:13,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:56:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:13,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:56:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,861 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-14 04:56:13,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 04:56:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:13,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 04:56:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:13,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:14,358 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-14 04:56:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 84 proven. 98 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-14 04:56:14,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292832265] [2020-10-14 04:56:14,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:14,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 04:56:14,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171862707] [2020-10-14 04:56:14,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 04:56:14,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:14,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 04:56:14,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:56:14,416 INFO L87 Difference]: Start difference. First operand 518 states and 710 transitions. Second operand 29 states. [2020-10-14 04:56:15,223 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-14 04:56:17,978 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-10-14 04:56:18,234 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-10-14 04:56:18,409 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-14 04:56:18,677 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-14 04:56:18,933 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-14 04:56:19,159 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2020-10-14 04:56:20,497 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2020-10-14 04:56:20,805 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-10-14 04:56:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:21,243 INFO L93 Difference]: Finished difference Result 574 states and 787 transitions. [2020-10-14 04:56:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 04:56:21,244 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2020-10-14 04:56:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:21,248 INFO L225 Difference]: With dead ends: 574 [2020-10-14 04:56:21,249 INFO L226 Difference]: Without dead ends: 572 [2020-10-14 04:56:21,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=457, Invalid=3575, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 04:56:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-14 04:56:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 543. [2020-10-14 04:56:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-14 04:56:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 741 transitions. [2020-10-14 04:56:21,306 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 741 transitions. Word has length 92 [2020-10-14 04:56:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:21,306 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 741 transitions. [2020-10-14 04:56:21,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 04:56:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 741 transitions. [2020-10-14 04:56:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 04:56:21,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:21,308 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:21,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:56:21,309 INFO L427 AbstractCegarLoop]: === Iteration 27 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:21,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1750219878, now seen corresponding path program 4 times [2020-10-14 04:56:21,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:21,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522218926] [2020-10-14 04:56:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 04:56:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:56:26,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:56:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 04:56:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:56:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:56:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:56:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:56:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:56:26,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:26,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:56:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 04:56:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:26,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:26,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:56:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 04:56:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:56:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:56:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:56:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 52 proven. 11 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 04:56:26,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522218926] [2020-10-14 04:56:26,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:26,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:26,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702509149] [2020-10-14 04:56:26,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:26,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:26,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:26,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:26,697 INFO L87 Difference]: Start difference. First operand 543 states and 741 transitions. Second operand 16 states. [2020-10-14 04:56:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:27,876 INFO L93 Difference]: Finished difference Result 1148 states and 1616 transitions. [2020-10-14 04:56:27,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:56:27,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-10-14 04:56:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:27,883 INFO L225 Difference]: With dead ends: 1148 [2020-10-14 04:56:27,883 INFO L226 Difference]: Without dead ends: 713 [2020-10-14 04:56:27,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:56:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-14 04:56:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 651. [2020-10-14 04:56:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-14 04:56:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 893 transitions. [2020-10-14 04:56:27,944 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 893 transitions. Word has length 93 [2020-10-14 04:56:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:27,945 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 893 transitions. [2020-10-14 04:56:27,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 893 transitions. [2020-10-14 04:56:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 04:56:27,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:27,947 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:27,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:56:27,948 INFO L427 AbstractCegarLoop]: === Iteration 28 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:27,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2097157279, now seen corresponding path program 8 times [2020-10-14 04:56:27,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:27,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986623107] [2020-10-14 04:56:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:31,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:33,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 04:56:33,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:56:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 04:56:33,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:33,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 04:56:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 04:56:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:33,761 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-14 04:56:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:34,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:34,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:56:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:34,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:34,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:56:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:56:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 04:56:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:34,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:56:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 04:56:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:34,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:34,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:34,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:56:34,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:34,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:34,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:35,112 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-14 04:56:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 130 proven. 109 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 04:56:35,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986623107] [2020-10-14 04:56:35,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:35,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 04:56:35,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583457092] [2020-10-14 04:56:35,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 04:56:35,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:35,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 04:56:35,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=856, Unknown=0, NotChecked=0, Total=930 [2020-10-14 04:56:35,164 INFO L87 Difference]: Start difference. First operand 651 states and 893 transitions. Second operand 31 states. [2020-10-14 04:56:35,774 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-14 04:56:38,223 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-14 04:56:38,644 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-14 04:56:39,012 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2020-10-14 04:56:39,878 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-10-14 04:56:40,230 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2020-10-14 04:56:40,502 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-14 04:56:40,865 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-14 04:56:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:41,775 INFO L93 Difference]: Finished difference Result 1129 states and 1557 transitions. [2020-10-14 04:56:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 04:56:41,776 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 95 [2020-10-14 04:56:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:41,782 INFO L225 Difference]: With dead ends: 1129 [2020-10-14 04:56:41,782 INFO L226 Difference]: Without dead ends: 785 [2020-10-14 04:56:41,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=456, Invalid=3834, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 04:56:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-14 04:56:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 683. [2020-10-14 04:56:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-14 04:56:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 930 transitions. [2020-10-14 04:56:41,847 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 930 transitions. Word has length 95 [2020-10-14 04:56:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:41,848 INFO L479 AbstractCegarLoop]: Abstraction has 683 states and 930 transitions. [2020-10-14 04:56:41,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 04:56:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 930 transitions. [2020-10-14 04:56:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:56:41,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:41,850 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:41,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:56:41,850 INFO L427 AbstractCegarLoop]: === Iteration 29 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1724349574, now seen corresponding path program 5 times [2020-10-14 04:56:41,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:41,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581489939] [2020-10-14 04:56:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:46,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:46,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 04:56:46,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:56:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 04:56:46,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:46,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:46,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 04:56:46,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:46,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 04:56:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:47,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:47,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:56:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:56:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:47,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:47,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:56:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:56:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:47,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:56:47,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:56:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:56:47,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:47,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 04:56:47,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:56:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:56:47,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 04:56:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:48,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:56:48,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:56:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 04:56:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:56:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:56:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 04:56:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:56:48,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:48,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 69 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 04:56:48,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581489939] [2020-10-14 04:56:48,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:48,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 04:56:48,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466639892] [2020-10-14 04:56:48,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 04:56:48,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 04:56:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:56:48,541 INFO L87 Difference]: Start difference. First operand 683 states and 930 transitions. Second operand 27 states. [2020-10-14 04:56:49,084 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-14 04:56:49,540 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-14 04:56:50,421 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-14 04:56:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:53,500 INFO L93 Difference]: Finished difference Result 833 states and 1152 transitions. [2020-10-14 04:56:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 04:56:53,501 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-14 04:56:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:53,505 INFO L225 Difference]: With dead ends: 833 [2020-10-14 04:56:53,505 INFO L226 Difference]: Without dead ends: 831 [2020-10-14 04:56:53,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=529, Invalid=3377, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 04:56:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-14 04:56:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 702. [2020-10-14 04:56:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-14 04:56:53,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 956 transitions. [2020-10-14 04:56:53,578 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 956 transitions. Word has length 96 [2020-10-14 04:56:53,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:53,579 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 956 transitions. [2020-10-14 04:56:53,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 04:56:53,579 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 956 transitions. [2020-10-14 04:56:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 04:56:53,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:53,581 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 04:56:53,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:56:53,582 INFO L427 AbstractCegarLoop]: === Iteration 30 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:53,582 INFO L82 PathProgramCache]: Analyzing trace with hash 224763232, now seen corresponding path program 6 times [2020-10-14 04:56:53,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:53,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424269196] [2020-10-14 04:56:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:53,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:55,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 04:56:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:56:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:58,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:58,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:58,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:56:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:56:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:56:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:56:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:56:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:56:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:56:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:56:59,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:56:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:56:59,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:56:59,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:56:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:56:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:56:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,321 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-14 04:56:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 04:56:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:56:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:56:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:56:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:56:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 04:56:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:56:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:56:59,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:56:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:56:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:56:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 04:56:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:56:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 34 proven. 37 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 04:56:59,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424269196] [2020-10-14 04:56:59,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:59,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:56:59,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128357869] [2020-10-14 04:56:59,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:56:59,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:59,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:56:59,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:56:59,645 INFO L87 Difference]: Start difference. First operand 702 states and 956 transitions. Second operand 20 states. [2020-10-14 04:57:00,050 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-14 04:57:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:01,817 INFO L93 Difference]: Finished difference Result 1099 states and 1481 transitions. [2020-10-14 04:57:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:57:01,823 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2020-10-14 04:57:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:01,827 INFO L225 Difference]: With dead ends: 1099 [2020-10-14 04:57:01,827 INFO L226 Difference]: Without dead ends: 707 [2020-10-14 04:57:01,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 04:57:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-10-14 04:57:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 704. [2020-10-14 04:57:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-14 04:57:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 959 transitions. [2020-10-14 04:57:01,890 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 959 transitions. Word has length 98 [2020-10-14 04:57:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:01,891 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 959 transitions. [2020-10-14 04:57:01,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:57:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 959 transitions. [2020-10-14 04:57:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:57:01,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:01,893 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:01,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:57:01,894 INFO L427 AbstractCegarLoop]: === Iteration 31 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:01,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1919446701, now seen corresponding path program 4 times [2020-10-14 04:57:01,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:01,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204335823] [2020-10-14 04:57:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:06,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:06,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:57:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:57:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:57:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:06,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:57:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:57:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:07,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:07,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:57:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:07,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:07,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:57:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:57:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:57:07,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:57:07,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:57:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:57:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 04:57:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:57:07,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:07,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:57:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:07,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:07,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 04:57:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:57:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 04:57:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:57:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:57:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:57:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:57:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 04:57:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:07,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:07,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:07,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:07,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:07,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 31 proven. 32 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 04:57:07,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204335823] [2020-10-14 04:57:07,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:07,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:07,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526581497] [2020-10-14 04:57:07,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:07,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:07,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:07,361 INFO L87 Difference]: Start difference. First operand 704 states and 959 transitions. Second operand 17 states. [2020-10-14 04:57:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:09,225 INFO L93 Difference]: Finished difference Result 1365 states and 1867 transitions. [2020-10-14 04:57:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:57:09,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 99 [2020-10-14 04:57:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:09,231 INFO L225 Difference]: With dead ends: 1365 [2020-10-14 04:57:09,231 INFO L226 Difference]: Without dead ends: 802 [2020-10-14 04:57:09,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 04:57:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-14 04:57:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 796. [2020-10-14 04:57:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-10-14 04:57:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1087 transitions. [2020-10-14 04:57:09,312 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1087 transitions. Word has length 99 [2020-10-14 04:57:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:09,312 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1087 transitions. [2020-10-14 04:57:09,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1087 transitions. [2020-10-14 04:57:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:57:09,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:09,314 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:09,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:57:09,315 INFO L427 AbstractCegarLoop]: === Iteration 32 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:09,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:09,315 INFO L82 PathProgramCache]: Analyzing trace with hash -802088129, now seen corresponding path program 5 times [2020-10-14 04:57:09,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:09,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373724369] [2020-10-14 04:57:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:09,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:57:14,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:57:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:57:14,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:57:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 04:57:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:57:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:14,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:57:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:14,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:57:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:57:14,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:57:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 04:57:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:14,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:14,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 04:57:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 04:57:14,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:57:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:14,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:14,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 04:57:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:14,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:57:14,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:57:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 04:57:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:57:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:57:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:57:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:57:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 04:57:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 04:57:14,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373724369] [2020-10-14 04:57:14,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:14,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:57:14,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202180056] [2020-10-14 04:57:14,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:57:14,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:14,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:57:14,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:57:14,840 INFO L87 Difference]: Start difference. First operand 796 states and 1087 transitions. Second operand 13 states. [2020-10-14 04:57:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:16,006 INFO L93 Difference]: Finished difference Result 1802 states and 2495 transitions. [2020-10-14 04:57:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:57:16,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-10-14 04:57:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:16,013 INFO L225 Difference]: With dead ends: 1802 [2020-10-14 04:57:16,014 INFO L226 Difference]: Without dead ends: 1147 [2020-10-14 04:57:16,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:57:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-10-14 04:57:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1092. [2020-10-14 04:57:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1092 states. [2020-10-14 04:57:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1506 transitions. [2020-10-14 04:57:16,117 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1506 transitions. Word has length 99 [2020-10-14 04:57:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:16,117 INFO L479 AbstractCegarLoop]: Abstraction has 1092 states and 1506 transitions. [2020-10-14 04:57:16,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:57:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1506 transitions. [2020-10-14 04:57:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:57:16,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:16,119 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:16,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:57:16,120 INFO L427 AbstractCegarLoop]: === Iteration 33 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:16,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1703179762, now seen corresponding path program 6 times [2020-10-14 04:57:16,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:16,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337876067] [2020-10-14 04:57:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:16,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:57:21,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:57:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:57:21,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:57:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:21,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 04:57:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:21,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:21,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:21,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:57:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:21,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:21,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:21,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:21,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:57:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:57:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:21,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:57:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:57:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:57:21,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:57:21,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 04:57:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:21,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:57:21,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 04:57:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:57:21,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:57:21,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:57:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:21,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 04:57:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:21,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:57:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:57:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:22,346 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-14 04:57:22,572 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-14 04:57:22,779 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-14 04:57:22,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 04:57:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 04:57:22,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:22,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:57:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 82 proven. 17 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 04:57:23,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337876067] [2020-10-14 04:57:23,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:23,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:23,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033276308] [2020-10-14 04:57:23,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:23,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:23,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:23,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:23,009 INFO L87 Difference]: Start difference. First operand 1092 states and 1506 transitions. Second operand 17 states. [2020-10-14 04:57:23,961 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 04:57:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:26,076 INFO L93 Difference]: Finished difference Result 2509 states and 3531 transitions. [2020-10-14 04:57:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 04:57:26,077 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 99 [2020-10-14 04:57:26,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:26,088 INFO L225 Difference]: With dead ends: 2509 [2020-10-14 04:57:26,088 INFO L226 Difference]: Without dead ends: 1572 [2020-10-14 04:57:26,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 04:57:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-10-14 04:57:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1541. [2020-10-14 04:57:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-14 04:57:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2186 transitions. [2020-10-14 04:57:26,251 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2186 transitions. Word has length 99 [2020-10-14 04:57:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:26,252 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 2186 transitions. [2020-10-14 04:57:26,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2186 transitions. [2020-10-14 04:57:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:57:26,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:26,255 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:26,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:57:26,255 INFO L427 AbstractCegarLoop]: === Iteration 34 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:26,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2001815356, now seen corresponding path program 6 times [2020-10-14 04:57:26,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:26,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551003441] [2020-10-14 04:57:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:26,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:27,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:57:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:31,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:31,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:31,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:31,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:57:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:31,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:31,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:57:31,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:31,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:31,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:32,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:32,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:57:32,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:32,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:57:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:57:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:57:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:32,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:32,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:32,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:57:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:32,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:57:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 04:57:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:32,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:57:32,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:57:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:32,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:57:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 04:57:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:57:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:32,824 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-14 04:57:33,050 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-14 04:57:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 04:57:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:33,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:33,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:57:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 04:57:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:57:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:57:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 04:57:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:57:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:57:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:57:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 68 proven. 65 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 04:57:33,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551003441] [2020-10-14 04:57:33,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:33,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 04:57:33,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139229832] [2020-10-14 04:57:33,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 04:57:33,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:33,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 04:57:33,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:57:33,486 INFO L87 Difference]: Start difference. First operand 1541 states and 2186 transitions. Second operand 30 states. [2020-10-14 04:57:34,154 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-14 04:57:36,005 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-14 04:57:40,290 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70