/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-manipulation/merge_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:57:26,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:57:26,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:57:26,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:57:26,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:57:26,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:57:26,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:57:26,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:57:26,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:57:26,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:57:26,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:57:26,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:57:26,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:57:26,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:57:26,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:57:26,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:57:26,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:57:26,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:57:26,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:57:26,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:57:26,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:57:26,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:57:26,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:57:26,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:57:26,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:57:26,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:57:26,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:57:26,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:57:26,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:57:26,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:57:26,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:57:26,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:57:26,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:57:26,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:57:26,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:57:26,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:57:26,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:57:26,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:57:26,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:57:26,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:57:26,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:57:26,647 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 04:57:26,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:57:26,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:57:26,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:57:26,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:57:26,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:57:26,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:57:26,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:57:26,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:57:26,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:57:26,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:57:26,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:57:26,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:57:26,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:57:26,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:57:26,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:57:26,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:57:26,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:57:26,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:57:26,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:57:26,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:57:26,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:57:26,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:57:26,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:57:26,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:57:26,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:57:26,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:57:26,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:57:26,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:57:26,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:57:26,709 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 04:57:27,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:57:27,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:57:27,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:57:27,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:57:27,098 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:57:27,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-2.i [2020-10-14 04:57:27,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2a79e6c6/00d077fdf7f34596a634771d38b21eb0/FLAG41594c92d [2020-10-14 04:57:27,760 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:57:27,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-2.i [2020-10-14 04:57:27,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2a79e6c6/00d077fdf7f34596a634771d38b21eb0/FLAG41594c92d [2020-10-14 04:57:28,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2a79e6c6/00d077fdf7f34596a634771d38b21eb0 [2020-10-14 04:57:28,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:57:28,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:57:28,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:57:28,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:57:28,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:57:28,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28, skipping insertion in model container [2020-10-14 04:57:28,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:57:28,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:57:28,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:57:28,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:57:28,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:57:28,801 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:57:28,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28 WrapperNode [2020-10-14 04:57:28,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:57:28,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:57:28,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:57:28,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:57:28,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (1/1) ... [2020-10-14 04:57:28,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:57:28,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:57:28,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:57:28,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:57:28,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (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 04:57:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:57:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:57:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:57:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:57:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-14 04:57:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-10-14 04:57:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-10-14 04:57:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-10-14 04:57:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-10-14 04:57:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-10-14 04:57:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:57:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:57:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:57:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:57:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:57:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:57:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:57:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:57:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:57:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:57:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:57:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:57:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:57:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:57:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:57:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:57:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:57:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:57:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:57:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:57:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:57:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:57:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:57:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:57:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:57:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:57:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:57:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:57:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:57:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:57:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:57:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:57:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:57:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:57:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:57:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:57:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:57:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:57:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:57:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:57:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:57:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:57:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:57:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:57:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:57:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:57:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:57:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:57:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:57:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:57:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:57:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:57:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:57:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:57:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-10-14 04:57:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:57:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:57:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:57:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-10-14 04:57:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-10-14 04:57:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-10-14 04:57:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:57:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:57:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:57:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:57:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:57:29,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:57:29,762 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-14 04:57:29,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:57:29 BoogieIcfgContainer [2020-10-14 04:57:29,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:57:29,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:57:29,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:57:29,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:57:29,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:57:28" (1/3) ... [2020-10-14 04:57:29,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3917d80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:57:29, skipping insertion in model container [2020-10-14 04:57:29,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:57:28" (2/3) ... [2020-10-14 04:57:29,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3917d80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:57:29, skipping insertion in model container [2020-10-14 04:57:29,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:57:29" (3/3) ... [2020-10-14 04:57:29,795 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-2.i [2020-10-14 04:57:29,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:57:29,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:57:29,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:57:29,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:57:29,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:57:29,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:57:29,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:57:29,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:57:29,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:57:29,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:57:29,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:57:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-10-14 04:57:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 04:57:29,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:29,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:29,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1873878464, now seen corresponding path program 1 times [2020-10-14 04:57:29,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:29,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237828828] [2020-10-14 04:57:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:57:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 04:57:30,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:30,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:57:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:57:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:30,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:57:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:30,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:30,394 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 04:57:30,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237828828] [2020-10-14 04:57:30,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:30,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:57:30,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174031172] [2020-10-14 04:57:30,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:57:30,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:30,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:57:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:57:30,422 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 3 states. [2020-10-14 04:57:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:30,669 INFO L93 Difference]: Finished difference Result 240 states and 408 transitions. [2020-10-14 04:57:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:57:30,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 04:57:30,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:30,685 INFO L225 Difference]: With dead ends: 240 [2020-10-14 04:57:30,686 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 04:57:30,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:57:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 04:57:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2020-10-14 04:57:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 04:57:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2020-10-14 04:57:30,751 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 13 [2020-10-14 04:57:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:30,752 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2020-10-14 04:57:30,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:57:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2020-10-14 04:57:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:57:30,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:30,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:30,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:57:30,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:30,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1323314826, now seen corresponding path program 1 times [2020-10-14 04:57:30,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:30,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625525990] [2020-10-14 04:57:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:30,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:57:30,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 04:57:30,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:30,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:30,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:57:30,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:30,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:30,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:30,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:30,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:30,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:30,964 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 04:57:30,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625525990] [2020-10-14 04:57:30,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:30,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:57:30,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751750835] [2020-10-14 04:57:30,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:57:30,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:30,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:57:30,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:57:30,968 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand 4 states. [2020-10-14 04:57:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:31,267 INFO L93 Difference]: Finished difference Result 206 states and 255 transitions. [2020-10-14 04:57:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:57:31,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 04:57:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:31,270 INFO L225 Difference]: With dead ends: 206 [2020-10-14 04:57:31,270 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 04:57:31,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:57:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 04:57:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2020-10-14 04:57:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 04:57:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2020-10-14 04:57:31,288 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 14 [2020-10-14 04:57:31,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:31,290 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2020-10-14 04:57:31,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:57:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2020-10-14 04:57:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:57:31,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:31,292 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:31,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:57:31,293 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1684995551, now seen corresponding path program 1 times [2020-10-14 04:57:31,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:31,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366448224] [2020-10-14 04:57:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:31,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:57:31,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-14 04:57:31,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:31,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:57:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:57:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:31,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:31,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:31,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:31,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366448224] [2020-10-14 04:57:31,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:31,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:57:31,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418847300] [2020-10-14 04:57:31,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:57:31,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:57:31,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:57:31,935 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand 7 states. [2020-10-14 04:57:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:32,658 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-10-14 04:57:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:57:32,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 04:57:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:32,661 INFO L225 Difference]: With dead ends: 157 [2020-10-14 04:57:32,661 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 04:57:32,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:57:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 04:57:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 108. [2020-10-14 04:57:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 04:57:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2020-10-14 04:57:32,694 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 20 [2020-10-14 04:57:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:32,695 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2020-10-14 04:57:32,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:57:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2020-10-14 04:57:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:57:32,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:32,697 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:32,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:57:32,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:32,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:32,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1145945773, now seen corresponding path program 1 times [2020-10-14 04:57:32,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:32,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884759456] [2020-10-14 04:57:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:57:33,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:33,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 04:57:33,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:57:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:33,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:33,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:57:33,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884759456] [2020-10-14 04:57:33,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:33,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:57:33,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354919815] [2020-10-14 04:57:33,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:57:33,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:33,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:57:33,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:57:33,072 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand 6 states. [2020-10-14 04:57:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:33,538 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2020-10-14 04:57:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:57:33,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 04:57:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:33,540 INFO L225 Difference]: With dead ends: 116 [2020-10-14 04:57:33,540 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 04:57:33,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:57:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 04:57:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-10-14 04:57:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 04:57:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2020-10-14 04:57:33,553 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 27 [2020-10-14 04:57:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:33,554 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2020-10-14 04:57:33,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:57:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2020-10-14 04:57:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:57:33,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:33,555 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:33,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:57:33,555 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1471361763, now seen corresponding path program 1 times [2020-10-14 04:57:33,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:33,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006878725] [2020-10-14 04:57:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:57:33,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:33,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 04:57:33,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:57:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:57:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:33,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:33,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:33,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:33,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:33,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:57:33,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006878725] [2020-10-14 04:57:33,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:33,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:57:33,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107799331] [2020-10-14 04:57:33,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:57:33,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:33,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:57:33,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:57:33,913 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand 6 states. [2020-10-14 04:57:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:34,348 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2020-10-14 04:57:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:57:34,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 04:57:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:34,350 INFO L225 Difference]: With dead ends: 115 [2020-10-14 04:57:34,351 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 04:57:34,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:57:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 04:57:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-10-14 04:57:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 04:57:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2020-10-14 04:57:34,362 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 27 [2020-10-14 04:57:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:34,362 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2020-10-14 04:57:34,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:57:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2020-10-14 04:57:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:57:34,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:34,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:34,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:57:34,364 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1648323131, now seen corresponding path program 1 times [2020-10-14 04:57:34,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:34,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377119757] [2020-10-14 04:57:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:34,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:57:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 04:57:34,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:34,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:57:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:57:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:34,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:34,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:34,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:34,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:34,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:34,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377119757] [2020-10-14 04:57:34,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:34,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:57:34,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601902098] [2020-10-14 04:57:34,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:34,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:34,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:34,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:34,722 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 8 states. [2020-10-14 04:57:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:35,325 INFO L93 Difference]: Finished difference Result 147 states and 177 transitions. [2020-10-14 04:57:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:57:35,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-14 04:57:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:35,328 INFO L225 Difference]: With dead ends: 147 [2020-10-14 04:57:35,328 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 04:57:35,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:57:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 04:57:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-14 04:57:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 04:57:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2020-10-14 04:57:35,340 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 30 [2020-10-14 04:57:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:35,341 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2020-10-14 04:57:35,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2020-10-14 04:57:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:57:35,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:35,342 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:35,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:57:35,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash 861386650, now seen corresponding path program 1 times [2020-10-14 04:57:35,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:35,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333800252] [2020-10-14 04:57:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:36,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:36,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:57:36,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:57:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-14 04:57:36,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:36,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:57:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:57:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:36,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:36,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:36,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333800252] [2020-10-14 04:57:36,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:36,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:57:36,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374898836] [2020-10-14 04:57:36,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:36,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:36,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:36,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:36,816 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 8 states. [2020-10-14 04:57:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:37,659 INFO L93 Difference]: Finished difference Result 146 states and 175 transitions. [2020-10-14 04:57:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:57:37,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-14 04:57:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:37,663 INFO L225 Difference]: With dead ends: 146 [2020-10-14 04:57:37,664 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 04:57:37,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:57:37,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 04:57:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 118. [2020-10-14 04:57:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 04:57:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-10-14 04:57:37,681 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 30 [2020-10-14 04:57:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:37,682 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-10-14 04:57:37,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-10-14 04:57:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:57:37,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:37,691 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:37,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:57:37,691 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash 671486784, now seen corresponding path program 1 times [2020-10-14 04:57:37,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:37,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793274302] [2020-10-14 04:57:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:37,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 04:57:37,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:57:37,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:37,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:57:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:57:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:38,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:38,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793274302] [2020-10-14 04:57:38,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:38,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:57:38,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196186419] [2020-10-14 04:57:38,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:57:38,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:38,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:57:38,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:57:38,018 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 9 states. [2020-10-14 04:57:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:38,833 INFO L93 Difference]: Finished difference Result 150 states and 181 transitions. [2020-10-14 04:57:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:57:38,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-14 04:57:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:38,836 INFO L225 Difference]: With dead ends: 150 [2020-10-14 04:57:38,836 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 04:57:38,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:57:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 04:57:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-10-14 04:57:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 04:57:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-10-14 04:57:38,849 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 33 [2020-10-14 04:57:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:38,850 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-10-14 04:57:38,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:57:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-10-14 04:57:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:57:38,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:38,851 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:38,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:57:38,852 INFO L427 AbstractCegarLoop]: === Iteration 9 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1082082582, now seen corresponding path program 1 times [2020-10-14 04:57:38,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:38,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425197264] [2020-10-14 04:57:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 04:57:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 04:57:39,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:39,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:57:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:57:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:57:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:39,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:39,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:39,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:39,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425197264] [2020-10-14 04:57:39,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:39,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:57:39,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310281337] [2020-10-14 04:57:39,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:57:39,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:39,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:57:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:57:39,808 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 9 states. [2020-10-14 04:57:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:40,586 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2020-10-14 04:57:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:57:40,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-14 04:57:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:40,588 INFO L225 Difference]: With dead ends: 149 [2020-10-14 04:57:40,588 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 04:57:40,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:57:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 04:57:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2020-10-14 04:57:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 04:57:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-10-14 04:57:40,603 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 33 [2020-10-14 04:57:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:40,605 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-10-14 04:57:40,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:57:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-10-14 04:57:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:57:40,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:40,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:40,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:57:40,609 INFO L427 AbstractCegarLoop]: === Iteration 10 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:40,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1572887273, now seen corresponding path program 1 times [2020-10-14 04:57:40,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:40,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882790644] [2020-10-14 04:57:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:57:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:57:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-14 04:57:41,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:57:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:57:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:41,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:41,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:57:41,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:57:41,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882790644] [2020-10-14 04:57:41,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:41,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:57:41,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980785693] [2020-10-14 04:57:41,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:57:41,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:57:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:57:41,546 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 6 states. [2020-10-14 04:57:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:42,135 INFO L93 Difference]: Finished difference Result 132 states and 155 transitions. [2020-10-14 04:57:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:57:42,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-14 04:57:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:42,138 INFO L225 Difference]: With dead ends: 132 [2020-10-14 04:57:42,138 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 04:57:42,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:57:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 04:57:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-10-14 04:57:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 04:57:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-10-14 04:57:42,168 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 38 [2020-10-14 04:57:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:42,169 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-10-14 04:57:42,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:57:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-10-14 04:57:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 04:57:42,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:42,172 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:42,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:57:42,172 INFO L427 AbstractCegarLoop]: === Iteration 11 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash 235623500, now seen corresponding path program 1 times [2020-10-14 04:57:42,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:42,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015346681] [2020-10-14 04:57:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:43,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 04:57:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:57:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1250 [2020-10-14 04:57:43,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:43,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:57:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:57:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:43,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:43,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:43,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:43,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:43,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:43,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:43,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:57:43,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:57:43,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:43,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:57:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:43,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015346681] [2020-10-14 04:57:43,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:43,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:57:43,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464383269] [2020-10-14 04:57:43,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:57:43,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:57:43,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:57:43,534 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 7 states. [2020-10-14 04:57:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:43,952 INFO L93 Difference]: Finished difference Result 158 states and 186 transitions. [2020-10-14 04:57:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:57:43,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-14 04:57:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:43,956 INFO L225 Difference]: With dead ends: 158 [2020-10-14 04:57:43,956 INFO L226 Difference]: Without dead ends: 155 [2020-10-14 04:57:43,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:57:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-14 04:57:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2020-10-14 04:57:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 04:57:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-10-14 04:57:43,972 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 41 [2020-10-14 04:57:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:43,972 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-10-14 04:57:43,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:57:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-10-14 04:57:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:57:43,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:43,974 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:43,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:57:43,975 INFO L427 AbstractCegarLoop]: === Iteration 12 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:43,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1351973035, now seen corresponding path program 1 times [2020-10-14 04:57:43,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:43,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474897664] [2020-10-14 04:57:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:45,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:57:45,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:57:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-14 04:57:45,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:45,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:57:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:45,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:45,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:45,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:45,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:45,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:57:45,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 04:57:45,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:45,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:57:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:45,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474897664] [2020-10-14 04:57:45,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:45,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:57:45,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594419294] [2020-10-14 04:57:45,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:45,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:45,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:45,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:45,922 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 8 states. [2020-10-14 04:57:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:46,801 INFO L93 Difference]: Finished difference Result 167 states and 197 transitions. [2020-10-14 04:57:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:57:46,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 04:57:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:46,804 INFO L225 Difference]: With dead ends: 167 [2020-10-14 04:57:46,804 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 04:57:46,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:57:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 04:57:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2020-10-14 04:57:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 04:57:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2020-10-14 04:57:46,820 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 44 [2020-10-14 04:57:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:46,820 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2020-10-14 04:57:46,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2020-10-14 04:57:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:57:46,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:46,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:46,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:57:46,822 INFO L427 AbstractCegarLoop]: === Iteration 13 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1255057270, now seen corresponding path program 1 times [2020-10-14 04:57:46,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:46,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814829004] [2020-10-14 04:57:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:57:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-14 04:57:47,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:47,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:57:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:47,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:47,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:47,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:47,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:47,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:57:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:48,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814829004] [2020-10-14 04:57:48,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:48,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:57:48,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64081581] [2020-10-14 04:57:48,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:48,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:48,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:48,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:48,007 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand 8 states. [2020-10-14 04:57:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:48,676 INFO L93 Difference]: Finished difference Result 275 states and 322 transitions. [2020-10-14 04:57:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:57:48,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 04:57:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:48,678 INFO L225 Difference]: With dead ends: 275 [2020-10-14 04:57:48,678 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 04:57:48,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:57:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 04:57:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2020-10-14 04:57:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 04:57:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2020-10-14 04:57:48,692 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 44 [2020-10-14 04:57:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:48,692 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2020-10-14 04:57:48,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2020-10-14 04:57:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 04:57:48,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:48,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:48,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:57:48,694 INFO L427 AbstractCegarLoop]: === Iteration 14 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:48,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1691394343, now seen corresponding path program 1 times [2020-10-14 04:57:48,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:48,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476577085] [2020-10-14 04:57:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 04:57:49,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 04:57:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:49,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:57:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:57:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:57:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:49,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:49,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:49,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:49,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:57:49,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:49,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:57:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:57:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:49,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:57:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:49,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476577085] [2020-10-14 04:57:49,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:49,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:57:49,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747294990] [2020-10-14 04:57:49,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:49,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:49,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:49,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:49,332 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand 8 states. [2020-10-14 04:57:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:50,105 INFO L93 Difference]: Finished difference Result 186 states and 215 transitions. [2020-10-14 04:57:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:57:50,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-14 04:57:50,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:50,108 INFO L225 Difference]: With dead ends: 186 [2020-10-14 04:57:50,108 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 04:57:50,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:57:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 04:57:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2020-10-14 04:57:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 04:57:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 190 transitions. [2020-10-14 04:57:50,124 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 190 transitions. Word has length 47 [2020-10-14 04:57:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:50,124 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 190 transitions. [2020-10-14 04:57:50,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 190 transitions. [2020-10-14 04:57:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:57:50,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:50,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:50,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:57:50,127 INFO L427 AbstractCegarLoop]: === Iteration 15 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1821749989, now seen corresponding path program 1 times [2020-10-14 04:57:50,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:50,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768792173] [2020-10-14 04:57:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 04:57:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 04:57:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:57:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:55,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:57:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:57:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:57:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:55,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:57:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:55,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:57:55,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:55,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:57:55,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:55,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:55,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:57:55,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:55,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:57:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 04:57:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:55,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:57:55,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:57:55,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:55,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:57:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:57:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:57:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:55,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768792173] [2020-10-14 04:57:55,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:57:55,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 04:57:55,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864590119] [2020-10-14 04:57:55,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:57:55,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:55,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:57:55,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:57:55,288 INFO L87 Difference]: Start difference. First operand 167 states and 190 transitions. Second operand 8 states. [2020-10-14 04:57:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:55,830 INFO L93 Difference]: Finished difference Result 229 states and 270 transitions. [2020-10-14 04:57:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:57:55,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-14 04:57:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:55,834 INFO L225 Difference]: With dead ends: 229 [2020-10-14 04:57:55,834 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 04:57:55,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:57:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 04:57:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2020-10-14 04:57:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 04:57:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 197 transitions. [2020-10-14 04:57:55,859 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 197 transitions. Word has length 50 [2020-10-14 04:57:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:55,860 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 197 transitions. [2020-10-14 04:57:55,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:57:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 197 transitions. [2020-10-14 04:57:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 04:57:55,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:55,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:55,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:57:55,862 INFO L427 AbstractCegarLoop]: === Iteration 16 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1200260978, now seen corresponding path program 1 times [2020-10-14 04:57:55,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:55,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362613248] [2020-10-14 04:57:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:56,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:00,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:00,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 04:58:00,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 04:58:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:58:00,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:00,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:58:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 04:58:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:00,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:00,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:00,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:00,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:00,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:00,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:58:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:00,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:01,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:01,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:58:01,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 04:58:01,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:01,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:58:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:58:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:58:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 04:58:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:01,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:01,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:58:01,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:58:01,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:01,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:58:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:01,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362613248] [2020-10-14 04:58:01,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:01,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:58:01,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649206914] [2020-10-14 04:58:01,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:58:01,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:01,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:58:01,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:58:01,088 INFO L87 Difference]: Start difference. First operand 172 states and 197 transitions. Second operand 7 states. [2020-10-14 04:58:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:01,611 INFO L93 Difference]: Finished difference Result 234 states and 276 transitions. [2020-10-14 04:58:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:58:01,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-14 04:58:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:01,613 INFO L225 Difference]: With dead ends: 234 [2020-10-14 04:58:01,613 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 04:58:01,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:58:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 04:58:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2020-10-14 04:58:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 04:58:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2020-10-14 04:58:01,631 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 51 [2020-10-14 04:58:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:01,632 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2020-10-14 04:58:01,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:58:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2020-10-14 04:58:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:58:01,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:01,633 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:01,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:58:01,633 INFO L427 AbstractCegarLoop]: === Iteration 17 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:01,634 INFO L82 PathProgramCache]: Analyzing trace with hash 629786452, now seen corresponding path program 2 times [2020-10-14 04:58:01,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:01,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192896716] [2020-10-14 04:58:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:04,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:04,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:58:04,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 04:58:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2657 [2020-10-14 04:58:04,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:04,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:58:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:58:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 04:58:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:04,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:04,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:04,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:04,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:04,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:04,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:04,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:58:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:04,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:04,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:58:04,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:58:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:04,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192896716] [2020-10-14 04:58:04,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:04,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:58:04,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158991789] [2020-10-14 04:58:04,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:58:04,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:58:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:58:04,392 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand 7 states. [2020-10-14 04:58:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:04,878 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2020-10-14 04:58:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:58:04,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 04:58:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:04,880 INFO L225 Difference]: With dead ends: 194 [2020-10-14 04:58:04,880 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 04:58:04,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:58:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 04:58:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2020-10-14 04:58:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 04:58:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 188 transitions. [2020-10-14 04:58:04,898 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 188 transitions. Word has length 50 [2020-10-14 04:58:04,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:04,899 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 188 transitions. [2020-10-14 04:58:04,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:58:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 188 transitions. [2020-10-14 04:58:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:58:04,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:04,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:04,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:58:04,900 INFO L427 AbstractCegarLoop]: === Iteration 18 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:04,901 INFO L82 PathProgramCache]: Analyzing trace with hash 532870687, now seen corresponding path program 2 times [2020-10-14 04:58:04,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:04,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955387552] [2020-10-14 04:58:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:05,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:05,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:58:05,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-14 04:58:05,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:05,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:58:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:58:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:58:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:05,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:05,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:05,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:05,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:05,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:05,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:05,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955387552] [2020-10-14 04:58:05,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:05,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:58:05,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115001703] [2020-10-14 04:58:05,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:58:05,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:58:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:58:05,574 INFO L87 Difference]: Start difference. First operand 166 states and 188 transitions. Second operand 13 states. [2020-10-14 04:58:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:06,896 INFO L93 Difference]: Finished difference Result 216 states and 249 transitions. [2020-10-14 04:58:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:58:06,896 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 04:58:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:06,898 INFO L225 Difference]: With dead ends: 216 [2020-10-14 04:58:06,898 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 04:58:06,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:58:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 04:58:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 177. [2020-10-14 04:58:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 04:58:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 200 transitions. [2020-10-14 04:58:06,927 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 200 transitions. Word has length 50 [2020-10-14 04:58:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:06,927 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 200 transitions. [2020-10-14 04:58:06,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:58:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 200 transitions. [2020-10-14 04:58:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:58:06,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:06,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:06,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:58:06,928 INFO L427 AbstractCegarLoop]: === Iteration 19 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash -254065794, now seen corresponding path program 1 times [2020-10-14 04:58:06,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:06,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14139512] [2020-10-14 04:58:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:08,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:08,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:58:08,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:58:08,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-10-14 04:58:08,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:08,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:08,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:58:08,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:58:08,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:58:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:08,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:08,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:08,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:08,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:08,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:58:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:08,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14139512] [2020-10-14 04:58:08,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:08,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:58:08,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938718400] [2020-10-14 04:58:08,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:58:08,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:08,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:58:08,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:58:08,773 INFO L87 Difference]: Start difference. First operand 177 states and 200 transitions. Second operand 13 states. [2020-10-14 04:58:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:09,961 INFO L93 Difference]: Finished difference Result 215 states and 247 transitions. [2020-10-14 04:58:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:58:09,968 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 04:58:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:09,969 INFO L225 Difference]: With dead ends: 215 [2020-10-14 04:58:09,970 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 04:58:09,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:58:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 04:58:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 184. [2020-10-14 04:58:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 04:58:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2020-10-14 04:58:09,986 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 50 [2020-10-14 04:58:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:09,986 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2020-10-14 04:58:09,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:58:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2020-10-14 04:58:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 04:58:09,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:09,987 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:09,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:58:09,988 INFO L427 AbstractCegarLoop]: === Iteration 20 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:09,988 INFO L82 PathProgramCache]: Analyzing trace with hash -596228507, now seen corresponding path program 1 times [2020-10-14 04:58:09,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:09,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044008689] [2020-10-14 04:58:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:10,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 04:58:10,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 04:58:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:10,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:58:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 04:58:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:58:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:10,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:10,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:10,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:10,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:10,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:58:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:10,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:10,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:58:10,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:10,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:58:10,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:10,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:58:10,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044008689] [2020-10-14 04:58:10,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:58:10,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:58:10,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225089591] [2020-10-14 04:58:10,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:58:10,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:10,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:58:10,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:58:10,419 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand 6 states. [2020-10-14 04:58:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:10,753 INFO L93 Difference]: Finished difference Result 191 states and 216 transitions. [2020-10-14 04:58:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:58:10,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-14 04:58:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:10,756 INFO L225 Difference]: With dead ends: 191 [2020-10-14 04:58:10,756 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 04:58:10,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:58:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 04:58:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-10-14 04:58:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 04:58:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 165 transitions. [2020-10-14 04:58:10,774 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 165 transitions. Word has length 53 [2020-10-14 04:58:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:10,774 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 165 transitions. [2020-10-14 04:58:10,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:58:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 165 transitions. [2020-10-14 04:58:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 04:58:10,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:10,777 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:10,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:58:10,777 INFO L427 AbstractCegarLoop]: === Iteration 21 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 389696732, now seen corresponding path program 1 times [2020-10-14 04:58:10,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:10,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810414221] [2020-10-14 04:58:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:10,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:10,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:58:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:58:10,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:11,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810414221] [2020-10-14 04:58:11,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:11,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:58:11,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214926866] [2020-10-14 04:58:11,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:58:11,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:58:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:58:11,355 INFO L87 Difference]: Start difference. First operand 145 states and 165 transitions. Second operand 13 states. [2020-10-14 04:58:11,887 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 04:58:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:13,098 INFO L93 Difference]: Finished difference Result 175 states and 203 transitions. [2020-10-14 04:58:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:58:13,099 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-14 04:58:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:13,101 INFO L225 Difference]: With dead ends: 175 [2020-10-14 04:58:13,101 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 04:58:13,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:58:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 04:58:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 138. [2020-10-14 04:58:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 04:58:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-10-14 04:58:13,114 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 53 [2020-10-14 04:58:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:13,115 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-10-14 04:58:13,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:58:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-10-14 04:58:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 04:58:13,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:13,116 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:13,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:58:13,116 INFO L427 AbstractCegarLoop]: === Iteration 22 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1363872634, now seen corresponding path program 1 times [2020-10-14 04:58:13,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:13,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219511980] [2020-10-14 04:58:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:14,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:15,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:15,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 04:58:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:58:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2412 [2020-10-14 04:58:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:15,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:58:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:58:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:58:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:15,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:15,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:15,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:15,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:16,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219511980] [2020-10-14 04:58:16,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:16,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:58:16,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4017393] [2020-10-14 04:58:16,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:58:16,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:16,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:58:16,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:58:16,029 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 13 states. [2020-10-14 04:58:16,292 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-14 04:58:16,572 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-14 04:58:16,720 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 04:58:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:17,933 INFO L93 Difference]: Finished difference Result 174 states and 201 transitions. [2020-10-14 04:58:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:58:17,935 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-14 04:58:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:17,937 INFO L225 Difference]: With dead ends: 174 [2020-10-14 04:58:17,937 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 04:58:17,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:58:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 04:58:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 141. [2020-10-14 04:58:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 04:58:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 161 transitions. [2020-10-14 04:58:17,951 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 161 transitions. Word has length 53 [2020-10-14 04:58:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:17,951 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 161 transitions. [2020-10-14 04:58:17,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:58:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 161 transitions. [2020-10-14 04:58:17,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 04:58:17,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:17,952 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:17,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:58:17,953 INFO L427 AbstractCegarLoop]: === Iteration 23 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:17,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1481902533, now seen corresponding path program 2 times [2020-10-14 04:58:17,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:17,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833830081] [2020-10-14 04:58:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:22,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:58:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:58:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:23,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:23,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:23,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:23,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:58:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:23,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:23,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:58:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:58:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:23,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:58:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 04:58:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:58:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 04:58:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:58:23,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:58:23,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:23,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 04:58:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:58:23,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833830081] [2020-10-14 04:58:23,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:23,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:58:23,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196320848] [2020-10-14 04:58:23,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:58:23,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:23,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:58:23,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:58:23,152 INFO L87 Difference]: Start difference. First operand 141 states and 161 transitions. Second operand 10 states. [2020-10-14 04:58:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:24,061 INFO L93 Difference]: Finished difference Result 211 states and 246 transitions. [2020-10-14 04:58:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:58:24,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 04:58:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:24,065 INFO L225 Difference]: With dead ends: 211 [2020-10-14 04:58:24,065 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 04:58:24,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:58:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 04:58:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2020-10-14 04:58:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 04:58:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2020-10-14 04:58:24,084 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 57 [2020-10-14 04:58:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:24,085 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2020-10-14 04:58:24,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:58:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2020-10-14 04:58:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 04:58:24,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:24,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:24,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:58:24,086 INFO L427 AbstractCegarLoop]: === Iteration 24 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:24,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:24,087 INFO L82 PathProgramCache]: Analyzing trace with hash -785542054, now seen corresponding path program 3 times [2020-10-14 04:58:24,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:24,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184866359] [2020-10-14 04:58:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:28,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:58:28,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 04:58:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4598 [2020-10-14 04:58:28,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:28,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:58:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 04:58:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:29,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:29,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:29,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:29,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:29,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184866359] [2020-10-14 04:58:29,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:29,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:58:29,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938732780] [2020-10-14 04:58:29,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:58:29,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:29,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:58:29,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:58:29,760 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand 17 states. [2020-10-14 04:58:30,919 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-14 04:58:31,113 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 04:58:31,375 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-14 04:58:31,595 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-14 04:58:32,088 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-10-14 04:58:32,421 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-10-14 04:58:32,664 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-10-14 04:58:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:33,269 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2020-10-14 04:58:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:58:33,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-10-14 04:58:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:33,272 INFO L225 Difference]: With dead ends: 234 [2020-10-14 04:58:33,272 INFO L226 Difference]: Without dead ends: 231 [2020-10-14 04:58:33,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:58:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-14 04:58:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 215. [2020-10-14 04:58:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 04:58:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-10-14 04:58:33,289 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 64 [2020-10-14 04:58:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:33,289 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-10-14 04:58:33,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:58:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-10-14 04:58:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 04:58:33,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:33,291 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 04:58:33,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:58:33,291 INFO L427 AbstractCegarLoop]: === Iteration 25 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1572478535, now seen corresponding path program 2 times [2020-10-14 04:58:33,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:33,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118774844] [2020-10-14 04:58:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1524 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 04:58:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:35,064 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-14 04:58:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:35,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:35,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:35,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:35,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:35,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:35,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118774844] [2020-10-14 04:58:35,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:35,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:58:35,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855748559] [2020-10-14 04:58:35,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:58:35,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:58:35,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:58:35,691 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand 17 states. [2020-10-14 04:58:36,721 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-14 04:58:36,902 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 04:58:37,137 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-14 04:58:37,363 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-14 04:58:37,812 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-10-14 04:58:38,134 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-14 04:58:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:38,693 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2020-10-14 04:58:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:58:38,694 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-10-14 04:58:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:38,696 INFO L225 Difference]: With dead ends: 233 [2020-10-14 04:58:38,696 INFO L226 Difference]: Without dead ends: 230 [2020-10-14 04:58:38,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:58:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-14 04:58:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 215. [2020-10-14 04:58:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 04:58:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 239 transitions. [2020-10-14 04:58:38,713 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 239 transitions. Word has length 64 [2020-10-14 04:58:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:38,713 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 239 transitions. [2020-10-14 04:58:38,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:58:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 239 transitions. [2020-10-14 04:58:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:58:38,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:38,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:38,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:58:38,715 INFO L427 AbstractCegarLoop]: === Iteration 26 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:38,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1031651521, now seen corresponding path program 2 times [2020-10-14 04:58:38,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:38,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373565442] [2020-10-14 04:58:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:38,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:43,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:43,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:58:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 04:58:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 04:58:43,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:43,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:58:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:58:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:44,010 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2020-10-14 04:58:44,141 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-10-14 04:58:44,277 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-10-14 04:58:44,411 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-10-14 04:58:44,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:44,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:44,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:44,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:44,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373565442] [2020-10-14 04:58:44,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:44,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:58:44,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574211591] [2020-10-14 04:58:44,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:58:44,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:44,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:58:44,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:58:44,877 INFO L87 Difference]: Start difference. First operand 215 states and 239 transitions. Second operand 16 states. [2020-10-14 04:58:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:46,956 INFO L93 Difference]: Finished difference Result 310 states and 354 transitions. [2020-10-14 04:58:46,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:58:46,958 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-14 04:58:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:46,959 INFO L225 Difference]: With dead ends: 310 [2020-10-14 04:58:46,959 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 04:58:46,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:58:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 04:58:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 219. [2020-10-14 04:58:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 04:58:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 243 transitions. [2020-10-14 04:58:46,983 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 243 transitions. Word has length 67 [2020-10-14 04:58:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:46,987 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 243 transitions. [2020-10-14 04:58:46,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:58:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 243 transitions. [2020-10-14 04:58:46,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:58:46,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:46,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:46,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:58:46,989 INFO L427 AbstractCegarLoop]: === Iteration 27 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash -721917845, now seen corresponding path program 2 times [2020-10-14 04:58:46,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:46,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974363874] [2020-10-14 04:58:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:49,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4358 [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:58:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:58:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:51,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:51,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:51,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:51,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:51,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974363874] [2020-10-14 04:58:51,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:51,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:58:51,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615557741] [2020-10-14 04:58:51,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:58:51,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:51,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:58:51,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:58:51,624 INFO L87 Difference]: Start difference. First operand 219 states and 243 transitions. Second operand 13 states. [2020-10-14 04:58:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:52,727 INFO L93 Difference]: Finished difference Result 284 states and 325 transitions. [2020-10-14 04:58:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:58:52,728 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-14 04:58:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:52,730 INFO L225 Difference]: With dead ends: 284 [2020-10-14 04:58:52,730 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 04:58:52,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:58:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 04:58:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-10-14 04:58:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 04:58:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 201 transitions. [2020-10-14 04:58:52,757 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 201 transitions. Word has length 67 [2020-10-14 04:58:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:52,758 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 201 transitions. [2020-10-14 04:58:52,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:58:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 201 transitions. [2020-10-14 04:58:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 04:58:52,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:52,759 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:52,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:58:52,759 INFO L427 AbstractCegarLoop]: === Iteration 28 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:52,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:52,760 INFO L82 PathProgramCache]: Analyzing trace with hash 104923946, now seen corresponding path program 1 times [2020-10-14 04:58:52,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:52,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449981433] [2020-10-14 04:58:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:52,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:57,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 04:58:57,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 04:58:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 04:58:57,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:57,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:58:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 04:58:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:58:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:57,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:57,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:57,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:58:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:58:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:58:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:58:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:57,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:58:57,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:58:57,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:57,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:57,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:57,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:57,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:58:57,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 04:58:57,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449981433] [2020-10-14 04:58:57,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:58:57,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 04:58:57,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321707323] [2020-10-14 04:58:57,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:58:57,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:58:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:58:57,918 INFO L87 Difference]: Start difference. First operand 181 states and 201 transitions. Second operand 12 states. [2020-10-14 04:58:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:58,691 INFO L93 Difference]: Finished difference Result 213 states and 246 transitions. [2020-10-14 04:58:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:58:58,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-14 04:58:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:58,694 INFO L225 Difference]: With dead ends: 213 [2020-10-14 04:58:58,694 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 04:58:58,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:58:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 04:58:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 195. [2020-10-14 04:58:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 04:58:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 223 transitions. [2020-10-14 04:58:58,711 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 223 transitions. Word has length 71 [2020-10-14 04:58:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:58,711 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 223 transitions. [2020-10-14 04:58:58,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:58:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 223 transitions. [2020-10-14 04:58:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 04:58:58,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:58,713 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:58,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:58:58,713 INFO L427 AbstractCegarLoop]: === Iteration 29 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1880558461, now seen corresponding path program 4 times [2020-10-14 04:58:58,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:58,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54688374] [2020-10-14 04:58:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:59,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:58:59,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:59,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-14 04:58:59,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:59,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:59,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:58:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:58:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 04:58:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:59,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:59,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:59,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:59,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:59,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:59,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:59,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54688374] [2020-10-14 04:58:59,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:59,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:58:59,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318524860] [2020-10-14 04:58:59,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:58:59,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:58:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:58:59,628 INFO L87 Difference]: Start difference. First operand 195 states and 223 transitions. Second operand 17 states. [2020-10-14 04:59:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:02,005 INFO L93 Difference]: Finished difference Result 251 states and 298 transitions. [2020-10-14 04:59:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:59:02,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 04:59:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:02,008 INFO L225 Difference]: With dead ends: 251 [2020-10-14 04:59:02,008 INFO L226 Difference]: Without dead ends: 248 [2020-10-14 04:59:02,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:59:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-14 04:59:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 206. [2020-10-14 04:59:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-14 04:59:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 235 transitions. [2020-10-14 04:59:02,027 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 235 transitions. Word has length 70 [2020-10-14 04:59:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:02,027 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 235 transitions. [2020-10-14 04:59:02,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:59:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 235 transitions. [2020-10-14 04:59:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 04:59:02,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:02,028 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:02,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:59:02,029 INFO L427 AbstractCegarLoop]: === Iteration 30 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1627472354, now seen corresponding path program 3 times [2020-10-14 04:59:02,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:02,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90001614] [2020-10-14 04:59:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:05,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:05,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:59:05,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:59:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3658 [2020-10-14 04:59:05,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:05,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:59:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:59:05,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 04:59:05,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:06,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:59:06,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90001614] [2020-10-14 04:59:06,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:06,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:59:06,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404463030] [2020-10-14 04:59:06,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:59:06,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:59:06,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:59:06,062 INFO L87 Difference]: Start difference. First operand 206 states and 235 transitions. Second operand 17 states. [2020-10-14 04:59:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:08,363 INFO L93 Difference]: Finished difference Result 250 states and 296 transitions. [2020-10-14 04:59:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:59:08,364 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 04:59:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:08,366 INFO L225 Difference]: With dead ends: 250 [2020-10-14 04:59:08,366 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 04:59:08,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-10-14 04:59:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 04:59:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 213. [2020-10-14 04:59:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-14 04:59:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 242 transitions. [2020-10-14 04:59:08,385 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 242 transitions. Word has length 70 [2020-10-14 04:59:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:08,385 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 242 transitions. [2020-10-14 04:59:08,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:59:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 242 transitions. [2020-10-14 04:59:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 04:59:08,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:08,387 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:08,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:59:08,387 INFO L427 AbstractCegarLoop]: === Iteration 31 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:08,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1078070003, now seen corresponding path program 1 times [2020-10-14 04:59:08,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:08,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815556591] [2020-10-14 04:59:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:13,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:13,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:59:13,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 04:59:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:13,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:13,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:13,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:13,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:59:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:59:13,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:59:13,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:13,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:59:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:59:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:59:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:13,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:59:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:59:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:13,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:59:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:59:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:59:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:59:13,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815556591] [2020-10-14 04:59:13,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:13,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:59:13,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289103538] [2020-10-14 04:59:13,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:59:13,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:13,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:59:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:59:13,581 INFO L87 Difference]: Start difference. First operand 213 states and 242 transitions. Second operand 10 states. [2020-10-14 04:59:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:14,282 INFO L93 Difference]: Finished difference Result 278 states and 327 transitions. [2020-10-14 04:59:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:59:14,283 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 04:59:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:14,286 INFO L225 Difference]: With dead ends: 278 [2020-10-14 04:59:14,286 INFO L226 Difference]: Without dead ends: 218 [2020-10-14 04:59:14,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:59:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-14 04:59:14,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2020-10-14 04:59:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 04:59:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-10-14 04:59:14,303 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 74 [2020-10-14 04:59:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:14,303 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-10-14 04:59:14,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:59:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-10-14 04:59:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 04:59:14,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:14,304 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:14,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:59:14,305 INFO L427 AbstractCegarLoop]: === Iteration 32 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -325516296, now seen corresponding path program 3 times [2020-10-14 04:59:14,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:14,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208149597] [2020-10-14 04:59:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:14,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:59:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:59:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:59:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:15,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:15,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:15,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:59:15,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208149597] [2020-10-14 04:59:15,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:15,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:59:15,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874510132] [2020-10-14 04:59:15,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:59:15,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:15,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:59:15,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:59:15,594 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 17 states. [2020-10-14 04:59:15,877 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-14 04:59:16,103 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-14 04:59:16,378 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-10-14 04:59:16,566 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-14 04:59:16,922 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2020-10-14 04:59:17,298 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 112 [2020-10-14 04:59:17,562 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-10-14 04:59:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:19,872 INFO L93 Difference]: Finished difference Result 239 states and 272 transitions. [2020-10-14 04:59:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:59:19,873 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-14 04:59:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:19,875 INFO L225 Difference]: With dead ends: 239 [2020-10-14 04:59:19,875 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 04:59:19,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:59:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 04:59:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 209. [2020-10-14 04:59:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 04:59:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 239 transitions. [2020-10-14 04:59:19,896 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 239 transitions. Word has length 73 [2020-10-14 04:59:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:19,897 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 239 transitions. [2020-10-14 04:59:19,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:59:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 239 transitions. [2020-10-14 04:59:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 04:59:19,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:19,898 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:19,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:59:19,899 INFO L427 AbstractCegarLoop]: === Iteration 33 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:19,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2079085662, now seen corresponding path program 3 times [2020-10-14 04:59:19,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:19,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468120478] [2020-10-14 04:59:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:25,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:25,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 04:59:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:59:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5419 [2020-10-14 04:59:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:25,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:59:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:59:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:59:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:26,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:26,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:26,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:59:26,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:26,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:59:26,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468120478] [2020-10-14 04:59:26,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:26,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:59:26,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543864459] [2020-10-14 04:59:26,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:59:26,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:26,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:59:26,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:59:26,244 INFO L87 Difference]: Start difference. First operand 209 states and 239 transitions. Second operand 17 states. [2020-10-14 04:59:26,537 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-14 04:59:26,765 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-14 04:59:27,038 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-10-14 04:59:27,224 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-14 04:59:27,599 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2020-10-14 04:59:27,953 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 112 [2020-10-14 04:59:28,213 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-10-14 04:59:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:30,395 INFO L93 Difference]: Finished difference Result 238 states and 270 transitions. [2020-10-14 04:59:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:59:30,395 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-14 04:59:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:30,397 INFO L225 Difference]: With dead ends: 238 [2020-10-14 04:59:30,398 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 04:59:30,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:59:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 04:59:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 212. [2020-10-14 04:59:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-14 04:59:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 242 transitions. [2020-10-14 04:59:30,419 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 242 transitions. Word has length 73 [2020-10-14 04:59:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:30,419 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 242 transitions. [2020-10-14 04:59:30,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:59:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 242 transitions. [2020-10-14 04:59:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 04:59:30,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:30,420 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:30,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:59:30,421 INFO L427 AbstractCegarLoop]: === Iteration 34 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash -432687923, now seen corresponding path program 1 times [2020-10-14 04:59:30,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:30,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481496265] [2020-10-14 04:59:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:35,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:59:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 04:59:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-14 04:59:35,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:35,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:59:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 04:59:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:59:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:35,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:35,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:59:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:35,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:59:35,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:35,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:59:35,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:35,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:59:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:35,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:59:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:59:35,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:35,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:59:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:59:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:59:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:59:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:35,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:59:35,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:35,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:59:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:35,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:59:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 04:59:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:59:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 04:59:35,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481496265] [2020-10-14 04:59:35,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:59:35,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:59:35,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143882070] [2020-10-14 04:59:35,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:59:35,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:59:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:59:35,654 INFO L87 Difference]: Start difference. First operand 212 states and 242 transitions. Second operand 5 states. [2020-10-14 04:59:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:35,940 INFO L93 Difference]: Finished difference Result 276 states and 334 transitions. [2020-10-14 04:59:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:59:35,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-14 04:59:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:35,943 INFO L225 Difference]: With dead ends: 276 [2020-10-14 04:59:35,944 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 04:59:35,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:59:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 04:59:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-14 04:59:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-14 04:59:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 243 transitions. [2020-10-14 04:59:35,962 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 243 transitions. Word has length 82 [2020-10-14 04:59:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:35,962 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 243 transitions. [2020-10-14 04:59:35,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:59:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 243 transitions. [2020-10-14 04:59:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 04:59:35,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:35,964 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:35,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:59:35,964 INFO L427 AbstractCegarLoop]: === Iteration 35 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:35,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2121631665, now seen corresponding path program 1 times [2020-10-14 04:59:35,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:35,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119444281] [2020-10-14 04:59:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:40,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 04:59:40,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 04:59:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:41,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:41,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:41,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:59:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:41,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:41,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:59:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:59:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:41,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:59:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:59:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:41,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:41,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:59:41,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:59:41,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:41,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:59:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:59:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:59:41,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119444281] [2020-10-14 04:59:41,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:41,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:59:41,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991641548] [2020-10-14 04:59:41,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:59:41,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:41,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:59:41,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:59:41,295 INFO L87 Difference]: Start difference. First operand 213 states and 243 transitions. Second operand 12 states. [2020-10-14 04:59:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:42,226 INFO L93 Difference]: Finished difference Result 320 states and 398 transitions. [2020-10-14 04:59:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:59:42,226 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-14 04:59:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:42,228 INFO L225 Difference]: With dead ends: 320 [2020-10-14 04:59:42,229 INFO L226 Difference]: Without dead ends: 256 [2020-10-14 04:59:42,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:59:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-14 04:59:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 234. [2020-10-14 04:59:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-14 04:59:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2020-10-14 04:59:42,253 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 82 [2020-10-14 04:59:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:42,254 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2020-10-14 04:59:42,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:59:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2020-10-14 04:59:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 04:59:42,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:42,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:42,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:59:42,256 INFO L427 AbstractCegarLoop]: === Iteration 36 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:42,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1773441982, now seen corresponding path program 5 times [2020-10-14 04:59:42,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:42,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624113087] [2020-10-14 04:59:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:47,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 04:59:47,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 04:59:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:59:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:47,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:59:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:59:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:59:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:47,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:47,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:47,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:59:47,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624113087] [2020-10-14 04:59:47,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:47,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:59:47,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734737649] [2020-10-14 04:59:47,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:59:47,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:47,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:59:47,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:59:47,844 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand 17 states. [2020-10-14 04:59:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:50,085 INFO L93 Difference]: Finished difference Result 450 states and 544 transitions. [2020-10-14 04:59:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:59:50,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-14 04:59:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:50,087 INFO L225 Difference]: With dead ends: 450 [2020-10-14 04:59:50,087 INFO L226 Difference]: Without dead ends: 315 [2020-10-14 04:59:50,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:59:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-14 04:59:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 288. [2020-10-14 04:59:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 04:59:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 334 transitions. [2020-10-14 04:59:50,109 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 334 transitions. Word has length 84 [2020-10-14 04:59:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:50,109 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 334 transitions. [2020-10-14 04:59:50,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:59:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 334 transitions. [2020-10-14 04:59:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:59:50,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:50,111 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:50,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:59:50,111 INFO L427 AbstractCegarLoop]: === Iteration 37 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash 70236943, now seen corresponding path program 1 times [2020-10-14 04:59:50,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:50,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052535417] [2020-10-14 04:59:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:55,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:59:55,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 04:59:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 04:59:55,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:55,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:59:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:59:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 04:59:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:55,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:59:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:55,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 04:59:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:55,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:59:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 04:59:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:55,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:59:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:59:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 04:59:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:59:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:59:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:55,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:59:55,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:55,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 04:59:55,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052535417] [2020-10-14 04:59:55,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:59:55,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 04:59:55,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745182152] [2020-10-14 04:59:55,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:59:55,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:55,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:59:55,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:59:55,674 INFO L87 Difference]: Start difference. First operand 288 states and 334 transitions. Second operand 12 states. [2020-10-14 04:59:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:56,741 INFO L93 Difference]: Finished difference Result 320 states and 381 transitions. [2020-10-14 04:59:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:59:56,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-14 04:59:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:56,744 INFO L225 Difference]: With dead ends: 320 [2020-10-14 04:59:56,744 INFO L226 Difference]: Without dead ends: 317 [2020-10-14 04:59:56,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:59:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-14 04:59:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 280. [2020-10-14 04:59:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-14 04:59:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 319 transitions. [2020-10-14 04:59:56,766 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 319 transitions. Word has length 91 [2020-10-14 04:59:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:56,767 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 319 transitions. [2020-10-14 04:59:56,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:59:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 319 transitions. [2020-10-14 04:59:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 04:59:56,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:56,769 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:56,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:59:56,769 INFO L427 AbstractCegarLoop]: === Iteration 38 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:56,770 INFO L82 PathProgramCache]: Analyzing trace with hash 499466173, now seen corresponding path program 1 times [2020-10-14 04:59:56,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:56,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424911945] [2020-10-14 04:59:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:01,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 05:00:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:00:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 05:00:01,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:01,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:00:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 05:00:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:00:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:01,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:00:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:01,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:01,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:01,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:00:01,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:01,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:00:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:01,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:00:01,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:00:01,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:01,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:02,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 05:00:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:02,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:00:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:00:02,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:00:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:02,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:02,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:00:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:02,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:00:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:02,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:02,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:02,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 05:00:02,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424911945] [2020-10-14 05:00:02,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:00:02,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:00:02,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250907212] [2020-10-14 05:00:02,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:00:02,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:00:02,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:00:02,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:00:02,429 INFO L87 Difference]: Start difference. First operand 280 states and 319 transitions. Second operand 13 states. [2020-10-14 05:00:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:03,532 INFO L93 Difference]: Finished difference Result 315 states and 370 transitions. [2020-10-14 05:00:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:00:03,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-10-14 05:00:03,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:03,535 INFO L225 Difference]: With dead ends: 315 [2020-10-14 05:00:03,535 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 05:00:03,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:00:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 05:00:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 299. [2020-10-14 05:00:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-14 05:00:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 342 transitions. [2020-10-14 05:00:03,557 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 342 transitions. Word has length 93 [2020-10-14 05:00:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:03,557 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 342 transitions. [2020-10-14 05:00:03,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:00:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 342 transitions. [2020-10-14 05:00:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 05:00:03,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:03,559 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:00:03,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:00:03,560 INFO L427 AbstractCegarLoop]: === Iteration 39 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 648541960, now seen corresponding path program 1 times [2020-10-14 05:00:03,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:03,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129115838] [2020-10-14 05:00:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:00:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 05:00:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 05:00:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:00:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:08,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:08,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:08,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:00:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:08,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:08,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:00:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 05:00:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:08,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:09,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:09,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:00:09,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:00:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-14 05:00:09,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:09,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:00:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:00:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:00:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:09,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:00:09,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:09,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:00:09,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:09,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:00:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:00:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:00:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:09,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 05:00:09,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129115838] [2020-10-14 05:00:09,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:00:09,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:00:09,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516817145] [2020-10-14 05:00:09,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:00:09,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:00:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:00:09,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:00:09,562 INFO L87 Difference]: Start difference. First operand 299 states and 342 transitions. Second operand 14 states. [2020-10-14 05:00:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:11,056 INFO L93 Difference]: Finished difference Result 340 states and 407 transitions. [2020-10-14 05:00:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:00:11,057 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-14 05:00:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:11,059 INFO L225 Difference]: With dead ends: 340 [2020-10-14 05:00:11,059 INFO L226 Difference]: Without dead ends: 327 [2020-10-14 05:00:11,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:00:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-14 05:00:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 309. [2020-10-14 05:00:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-14 05:00:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 357 transitions. [2020-10-14 05:00:11,084 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 357 transitions. Word has length 94 [2020-10-14 05:00:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:11,084 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 357 transitions. [2020-10-14 05:00:11,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:00:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 357 transitions. [2020-10-14 05:00:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 05:00:11,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:11,086 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:00:11,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:00:11,086 INFO L427 AbstractCegarLoop]: === Iteration 40 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:11,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:11,087 INFO L82 PathProgramCache]: Analyzing trace with hash -578861721, now seen corresponding path program 6 times [2020-10-14 05:00:11,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:11,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981812609] [2020-10-14 05:00:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 05:00:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:00:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1666 [2020-10-14 05:00:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:12,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:00:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:00:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 05:00:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:00:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:13,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:13,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:13,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:13,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:00:13,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981812609] [2020-10-14 05:00:13,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:00:13,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:00:13,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826681808] [2020-10-14 05:00:13,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:00:13,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:00:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:00:13,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:00:13,432 INFO L87 Difference]: Start difference. First operand 309 states and 357 transitions. Second operand 21 states. [2020-10-14 05:00:14,395 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-14 05:00:14,671 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2020-10-14 05:00:14,915 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-14 05:00:15,210 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-10-14 05:00:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:17,975 INFO L93 Difference]: Finished difference Result 371 states and 429 transitions. [2020-10-14 05:00:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:00:17,976 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 05:00:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:17,978 INFO L225 Difference]: With dead ends: 371 [2020-10-14 05:00:17,978 INFO L226 Difference]: Without dead ends: 368 [2020-10-14 05:00:17,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:00:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-14 05:00:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 320. [2020-10-14 05:00:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-14 05:00:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 369 transitions. [2020-10-14 05:00:18,000 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 369 transitions. Word has length 90 [2020-10-14 05:00:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:18,000 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 369 transitions. [2020-10-14 05:00:18,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:00:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 369 transitions. [2020-10-14 05:00:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 05:00:18,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:18,002 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:00:18,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:00:18,003 INFO L427 AbstractCegarLoop]: === Iteration 41 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1365798202, now seen corresponding path program 4 times [2020-10-14 05:00:18,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:18,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209300947] [2020-10-14 05:00:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:22,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 05:00:22,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:00:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4393 [2020-10-14 05:00:22,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:22,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:00:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:00:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 05:00:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:00:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:23,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 8 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:00:23,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209300947] [2020-10-14 05:00:23,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:00:23,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:00:23,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932414940] [2020-10-14 05:00:23,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:00:23,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:00:23,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:00:23,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:00:23,103 INFO L87 Difference]: Start difference. First operand 320 states and 369 transitions. Second operand 21 states. [2020-10-14 05:00:24,042 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-14 05:00:24,320 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2020-10-14 05:00:24,574 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-14 05:00:24,856 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-10-14 05:00:27,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:27,524 INFO L93 Difference]: Finished difference Result 370 states and 427 transitions. [2020-10-14 05:00:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:00:27,525 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 05:00:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:27,527 INFO L225 Difference]: With dead ends: 370 [2020-10-14 05:00:27,528 INFO L226 Difference]: Without dead ends: 367 [2020-10-14 05:00:27,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:00:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-14 05:00:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 327. [2020-10-14 05:00:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-14 05:00:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2020-10-14 05:00:27,552 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 90 [2020-10-14 05:00:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:27,552 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2020-10-14 05:00:27,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:00:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2020-10-14 05:00:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 05:00:27,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:27,554 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:00:27,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:00:27,555 INFO L427 AbstractCegarLoop]: === Iteration 42 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:27,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1713268359, now seen corresponding path program 1 times [2020-10-14 05:00:27,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:27,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381107421] [2020-10-14 05:00:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:32,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 05:00:32,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:00:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 05:00:32,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:32,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:00:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:00:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 05:00:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:00:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:32,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:32,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:32,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:00:32,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:32,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:32,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:00:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:32,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:32,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:00:32,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:00:32,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:32,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:00:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:00:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:00:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 05:00:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:34,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:00:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:00:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 05:00:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:35,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:35,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:00:35,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:00:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-14 05:00:35,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:35,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:00:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:00:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:35,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:00:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:00:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:35,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:00:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:00:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:00:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:00:35,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381107421] [2020-10-14 05:00:35,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:00:35,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:00:35,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987269788] [2020-10-14 05:00:35,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:00:35,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:00:35,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:00:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:00:35,513 INFO L87 Difference]: Start difference. First operand 327 states and 376 transitions. Second operand 18 states. [2020-10-14 05:00:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:37,190 INFO L93 Difference]: Finished difference Result 517 states and 660 transitions. [2020-10-14 05:00:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:00:37,191 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 96 [2020-10-14 05:00:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:37,194 INFO L225 Difference]: With dead ends: 517 [2020-10-14 05:00:37,194 INFO L226 Difference]: Without dead ends: 411 [2020-10-14 05:00:37,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:00:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-14 05:00:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 329. [2020-10-14 05:00:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-14 05:00:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 379 transitions. [2020-10-14 05:00:37,221 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 379 transitions. Word has length 96 [2020-10-14 05:00:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:37,221 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 379 transitions. [2020-10-14 05:00:37,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:00:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 379 transitions. [2020-10-14 05:00:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 05:00:37,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:37,223 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 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 05:00:37,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:00:37,224 INFO L427 AbstractCegarLoop]: === Iteration 43 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash -737650540, now seen corresponding path program 4 times [2020-10-14 05:00:37,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:37,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624874755] [2020-10-14 05:00:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:38,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:38,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 05:00:38,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-10-14 05:00:38,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:38,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:00:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:00:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 05:00:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:38,854 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-14 05:00:39,155 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-14 05:00:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:00:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:39,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:39,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:00:39,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:00:39,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:00:39,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:39,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:00:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:00:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:00:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:00:39,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624874755] [2020-10-14 05:00:39,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:00:39,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:00:39,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067330140] [2020-10-14 05:00:39,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:00:39,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:00:39,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:00:39,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:00:39,926 INFO L87 Difference]: Start difference. First operand 329 states and 379 transitions. Second operand 21 states. [2020-10-14 05:00:40,387 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-14 05:00:40,738 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2020-10-14 05:00:41,309 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2020-10-14 05:00:41,932 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 138 [2020-10-14 05:00:42,268 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 99 [2020-10-14 05:00:43,225 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 146 [2020-10-14 05:00:43,895 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 151 [2020-10-14 05:00:44,304 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 112 [2020-10-14 05:00:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:00:48,010 INFO L93 Difference]: Finished difference Result 371 states and 428 transitions. [2020-10-14 05:00:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:00:48,010 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-10-14 05:00:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:00:48,015 INFO L225 Difference]: With dead ends: 371 [2020-10-14 05:00:48,016 INFO L226 Difference]: Without dead ends: 368 [2020-10-14 05:00:48,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:00:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-14 05:00:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 322. [2020-10-14 05:00:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-14 05:00:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 372 transitions. [2020-10-14 05:00:48,049 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 372 transitions. Word has length 93 [2020-10-14 05:00:48,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:00:48,051 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 372 transitions. [2020-10-14 05:00:48,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:00:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 372 transitions. [2020-10-14 05:00:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 05:00:48,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:00:48,054 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:00:48,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 05:00:48,054 INFO L427 AbstractCegarLoop]: === Iteration 44 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:00:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:00:48,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1803747390, now seen corresponding path program 4 times [2020-10-14 05:00:48,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:00:48,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287658580] [2020-10-14 05:00:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:00:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:00:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:52,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:00:53,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:00:53,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 05:00:53,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:00:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5430 [2020-10-14 05:00:53,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:00:53,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:00:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:00:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:00:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 05:00:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:00:54,581 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2020-10-14 05:00:55,034 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 49 [2020-10-14 05:00:55,724 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-14 05:00:56,125 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 54 [2020-10-14 05:00:56,795 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 71 [2020-10-14 05:00:57,559 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 81 [2020-10-14 05:00:57,880 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-10-14 05:00:58,193 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-14 05:00:58,494 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-14 05:00:58,763 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-10-14 05:00:58,941 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-14 05:00:59,230 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-14 05:00:59,540 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-14 05:00:59,761 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-14 05:01:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:01:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:00,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:01:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:01:00,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287658580] [2020-10-14 05:01:00,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:01:00,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:01:00,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462994523] [2020-10-14 05:01:00,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:01:00,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:01:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:01:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:01:00,515 INFO L87 Difference]: Start difference. First operand 322 states and 372 transitions. Second operand 26 states. [2020-10-14 05:01:01,053 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-14 05:01:01,226 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-14 05:01:01,673 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-10-14 05:01:02,424 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2020-10-14 05:01:02,845 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67