/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-data/running_example.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:54:12,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:54:12,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:54:12,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:54:12,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:54:12,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:54:12,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:54:12,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:54:12,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:54:12,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:54:12,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:54:12,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:54:12,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:54:12,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:54:12,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:54:12,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:54:12,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:54:12,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:54:12,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:54:12,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:54:12,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:54:12,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:54:12,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:54:12,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:54:12,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:54:12,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:54:12,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:54:12,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:54:12,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:54:12,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:54:12,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:54:12,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:54:12,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:54:12,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:54:12,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:54:12,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:54:12,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:54:12,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:54:12,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:54:12,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:54:12,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:54:12,756 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 04:54:12,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:54:12,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:54:12,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:54:12,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:54:12,807 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:54:12,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:54:12,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:54:12,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:54:12,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:54:12,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:54:12,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:54:12,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:54:12,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:54:12,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:54:12,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:54:12,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:54:12,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:54:12,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:54:12,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:54:12,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:54:12,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:54:12,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:54:12,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:54:12,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:54:12,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:54:12,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:54:12,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:54:12,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:54:12,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:54:12,813 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 04:54:13,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:54:13,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:54:13,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:54:13,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:54:13,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:54:13,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/running_example.i [2020-10-14 04:54:13,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc70806d/03551bfebb37466f9d0d2953fdf5d96b/FLAG511ad68a6 [2020-10-14 04:54:13,730 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:54:13,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/running_example.i [2020-10-14 04:54:13,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc70806d/03551bfebb37466f9d0d2953fdf5d96b/FLAG511ad68a6 [2020-10-14 04:54:14,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc70806d/03551bfebb37466f9d0d2953fdf5d96b [2020-10-14 04:54:14,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:54:14,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:54:14,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:54:14,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:54:14,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:54:14,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab111fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14, skipping insertion in model container [2020-10-14 04:54:14,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:54:14,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:54:14,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:54:14,545 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:54:14,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:54:14,647 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:54:14,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14 WrapperNode [2020-10-14 04:54:14,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:54:14,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:54:14,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:54:14,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:54:14,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (1/1) ... [2020-10-14 04:54:14,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:54:14,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:54:14,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:54:14,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:54:14,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (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 04:54:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:54:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:54:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 04:54:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 04:54:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:54:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:54:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:54:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 04:54:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 04:54:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:54:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:54:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:54:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:54:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:54:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:54:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:54:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:54:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:54:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:54:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:54:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:54:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:54:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:54:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:54:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:54:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:54:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:54:14,776 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:54:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:54:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:54:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:54:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:54:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:54:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:54:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:54:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:54:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:54:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:54:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:54:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:54:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:54:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:54:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:54:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:54:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:54:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:54:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:54:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:54:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:54:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:54:15,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:54:15,247 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 04:54:15,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:15 BoogieIcfgContainer [2020-10-14 04:54:15,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:54:15,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:54:15,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:54:15,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:54:15,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:54:14" (1/3) ... [2020-10-14 04:54:15,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2eb60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:15, skipping insertion in model container [2020-10-14 04:54:15,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:14" (2/3) ... [2020-10-14 04:54:15,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2eb60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:15, skipping insertion in model container [2020-10-14 04:54:15,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:15" (3/3) ... [2020-10-14 04:54:15,260 INFO L109 eAbstractionObserver]: Analyzing ICFG running_example.i [2020-10-14 04:54:15,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:54:15,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:54:15,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:54:15,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:54:15,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:54:15,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:54:15,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:54:15,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:54:15,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:54:15,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:54:15,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:54:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 04:54:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 04:54:15,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:15,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:15,347 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:15,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1790475303, now seen corresponding path program 1 times [2020-10-14 04:54:15,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:15,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470565301] [2020-10-14 04:54:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:15,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:54:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-14 04:54:15,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:15,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:54:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:54:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:15,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:15,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:15,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:54:15,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:15,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:15,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:15,946 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 04:54:15,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470565301] [2020-10-14 04:54:15,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:54:15,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:54:15,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940238790] [2020-10-14 04:54:15,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:54:15,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:54:15,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:54:15,971 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-10-14 04:54:16,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:16,046 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2020-10-14 04:54:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:54:16,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-14 04:54:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:16,057 INFO L225 Difference]: With dead ends: 32 [2020-10-14 04:54:16,058 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 04:54:16,061 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 04:54:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 04:54:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-14 04:54:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 04:54:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-10-14 04:54:16,094 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2020-10-14 04:54:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:16,095 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-10-14 04:54:16,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:54:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-10-14 04:54:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:54:16,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:16,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:16,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:54:16,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:16,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:16,097 INFO L82 PathProgramCache]: Analyzing trace with hash -734348207, now seen corresponding path program 1 times [2020-10-14 04:54:16,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:16,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551871288] [2020-10-14 04:54:16,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:16,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:54:16,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 04:54:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:16,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:54:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:16,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:16,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:54:16,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:16,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:54:16,323 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 04:54:16,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551871288] [2020-10-14 04:54:16,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:54:16,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:54:16,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423373866] [2020-10-14 04:54:16,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:54:16,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:54:16,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:54:16,332 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 6 states. [2020-10-14 04:54:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:16,489 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-10-14 04:54:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:54:16,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 04:54:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:16,493 INFO L225 Difference]: With dead ends: 39 [2020-10-14 04:54:16,493 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 04:54:16,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:16,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 04:54:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-10-14 04:54:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 04:54:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-14 04:54:16,503 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2020-10-14 04:54:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:16,503 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-14 04:54:16,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:54:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-10-14 04:54:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:54:16,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:16,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:16,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:54:16,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:16,506 INFO L82 PathProgramCache]: Analyzing trace with hash 147079127, now seen corresponding path program 1 times [2020-10-14 04:54:16,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:16,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424439865] [2020-10-14 04:54:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:16,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:54:16,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 04:54:16,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:16,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:54:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:54:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:16,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:16,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:54:16,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:16,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:16,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424439865] [2020-10-14 04:54:16,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:16,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:54:16,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450361580] [2020-10-14 04:54:16,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:54:16,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:16,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:54:16,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:54:16,974 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 7 states. [2020-10-14 04:54:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:17,244 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2020-10-14 04:54:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:54:17,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-14 04:54:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:17,246 INFO L225 Difference]: With dead ends: 50 [2020-10-14 04:54:17,246 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 04:54:17,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 04:54:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2020-10-14 04:54:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 04:54:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2020-10-14 04:54:17,255 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 18 [2020-10-14 04:54:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:17,256 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-10-14 04:54:17,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:54:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2020-10-14 04:54:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:54:17,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:17,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:17,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:54:17,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:17,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash 470360634, now seen corresponding path program 1 times [2020-10-14 04:54:17,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:17,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086163423] [2020-10-14 04:54:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:54:17,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 04:54:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:54:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:54:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:17,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:17,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:17,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:17,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:17,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086163423] [2020-10-14 04:54:17,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:17,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:54:17,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615003575] [2020-10-14 04:54:17,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:54:17,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:54:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:54:17,494 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand 6 states. [2020-10-14 04:54:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:17,673 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-10-14 04:54:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:54:17,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 04:54:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:17,675 INFO L225 Difference]: With dead ends: 51 [2020-10-14 04:54:17,675 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 04:54:17,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 04:54:17,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-14 04:54:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 04:54:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-14 04:54:17,684 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 20 [2020-10-14 04:54:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:17,685 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-14 04:54:17,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:54:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-14 04:54:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:54:17,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:17,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:17,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:54:17,687 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:17,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:17,687 INFO L82 PathProgramCache]: Analyzing trace with hash 977312820, now seen corresponding path program 1 times [2020-10-14 04:54:17,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:17,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645072577] [2020-10-14 04:54:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:17,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:17,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:54:17,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 04:54:17,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:17,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:54:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:54:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:18,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645072577] [2020-10-14 04:54:18,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:18,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:54:18,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336975738] [2020-10-14 04:54:18,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:54:18,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:18,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:54:18,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:54:18,009 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 7 states. [2020-10-14 04:54:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:18,258 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-10-14 04:54:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:54:18,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-14 04:54:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:18,260 INFO L225 Difference]: With dead ends: 65 [2020-10-14 04:54:18,260 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 04:54:18,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 04:54:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-10-14 04:54:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 04:54:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2020-10-14 04:54:18,279 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 22 [2020-10-14 04:54:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:18,279 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2020-10-14 04:54:18,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:54:18,280 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2020-10-14 04:54:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:54:18,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:18,286 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] [2020-10-14 04:54:18,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:54:18,286 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash 977314742, now seen corresponding path program 1 times [2020-10-14 04:54:18,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:18,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490248648] [2020-10-14 04:54:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:18,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:54:18,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 04:54:18,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:18,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:54:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:54:18,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:18,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:18,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:18,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:18,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:18,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:18,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490248648] [2020-10-14 04:54:18,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:18,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:54:18,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912880297] [2020-10-14 04:54:18,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:54:18,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:18,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:54:18,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:54:18,618 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand 7 states. [2020-10-14 04:54:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:18,874 INFO L93 Difference]: Finished difference Result 96 states and 132 transitions. [2020-10-14 04:54:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:54:18,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-14 04:54:18,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:18,876 INFO L225 Difference]: With dead ends: 96 [2020-10-14 04:54:18,877 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 04:54:18,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 04:54:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-14 04:54:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:54:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2020-10-14 04:54:18,888 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 22 [2020-10-14 04:54:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:18,889 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2020-10-14 04:54:18,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:54:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2020-10-14 04:54:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:54:18,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:18,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:18,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:54:18,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash 167966194, now seen corresponding path program 1 times [2020-10-14 04:54:18,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:18,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429046075] [2020-10-14 04:54:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:19,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:19,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:54:19,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:54:19,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 04:54:19,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:19,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:54:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:54:19,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:19,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:19,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:19,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:19,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429046075] [2020-10-14 04:54:19,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:54:19,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:54:19,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539991382] [2020-10-14 04:54:19,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:54:19,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:19,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:54:19,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:54:19,289 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand 6 states. [2020-10-14 04:54:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:19,450 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2020-10-14 04:54:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:54:19,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-14 04:54:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:19,452 INFO L225 Difference]: With dead ends: 85 [2020-10-14 04:54:19,452 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 04:54:19,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 04:54:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-14 04:54:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 04:54:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2020-10-14 04:54:19,462 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 22 [2020-10-14 04:54:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:19,462 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2020-10-14 04:54:19,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:54:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2020-10-14 04:54:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:54:19,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:19,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:19,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:54:19,464 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash 238325853, now seen corresponding path program 2 times [2020-10-14 04:54:19,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:19,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260284598] [2020-10-14 04:54:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:19,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:19,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:54:19,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 04:54:19,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:19,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:54:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:19,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:19,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:19,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:19,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:19,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:19,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:19,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260284598] [2020-10-14 04:54:19,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:19,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:19,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475303154] [2020-10-14 04:54:19,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:19,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:19,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:19,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:19,905 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 8 states. [2020-10-14 04:54:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:20,296 INFO L93 Difference]: Finished difference Result 99 states and 134 transitions. [2020-10-14 04:54:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:20,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-14 04:54:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:20,299 INFO L225 Difference]: With dead ends: 99 [2020-10-14 04:54:20,299 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 04:54:20,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:20,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 04:54:20,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 67. [2020-10-14 04:54:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 04:54:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2020-10-14 04:54:20,309 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 22 [2020-10-14 04:54:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:20,310 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2020-10-14 04:54:20,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2020-10-14 04:54:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:54:20,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:20,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:20,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:54:20,312 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:20,313 INFO L82 PathProgramCache]: Analyzing trace with hash 238327775, now seen corresponding path program 1 times [2020-10-14 04:54:20,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:20,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441902934] [2020-10-14 04:54:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:20,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:20,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:54:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 04:54:20,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:20,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:54:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:20,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:20,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:20,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:20,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:20,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:20,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441902934] [2020-10-14 04:54:20,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:20,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:20,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115995078] [2020-10-14 04:54:20,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:20,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:20,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:20,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:20,770 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand 8 states. [2020-10-14 04:54:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:21,060 INFO L93 Difference]: Finished difference Result 102 states and 144 transitions. [2020-10-14 04:54:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:54:21,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-14 04:54:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:21,061 INFO L225 Difference]: With dead ends: 102 [2020-10-14 04:54:21,061 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 04:54:21,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 04:54:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2020-10-14 04:54:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 04:54:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2020-10-14 04:54:21,069 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 22 [2020-10-14 04:54:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:21,070 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2020-10-14 04:54:21,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2020-10-14 04:54:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:54:21,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:21,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:21,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:54:21,071 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:21,072 INFO L82 PathProgramCache]: Analyzing trace with hash -2035848896, now seen corresponding path program 1 times [2020-10-14 04:54:21,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:21,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470617605] [2020-10-14 04:54:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:21,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:21,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:54:21,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 04:54:21,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:21,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:54:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:21,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:21,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:21,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:21,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:21,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:21,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:21,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:21,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:21,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470617605] [2020-10-14 04:54:21,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:21,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:21,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794466697] [2020-10-14 04:54:21,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:21,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:21,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:21,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:21,496 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand 9 states. [2020-10-14 04:54:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:21,900 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2020-10-14 04:54:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:54:21,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 04:54:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:21,901 INFO L225 Difference]: With dead ends: 118 [2020-10-14 04:54:21,902 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 04:54:21,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 04:54:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 83. [2020-10-14 04:54:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 04:54:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 116 transitions. [2020-10-14 04:54:21,911 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 116 transitions. Word has length 24 [2020-10-14 04:54:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:21,911 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 116 transitions. [2020-10-14 04:54:21,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 116 transitions. [2020-10-14 04:54:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:54:21,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:21,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:21,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:54:21,913 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2035846974, now seen corresponding path program 1 times [2020-10-14 04:54:21,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:21,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611146949] [2020-10-14 04:54:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:54:22,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 04:54:22,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:54:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:22,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:22,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:22,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:22,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611146949] [2020-10-14 04:54:22,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:22,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:22,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937664912] [2020-10-14 04:54:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:22,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:22,344 INFO L87 Difference]: Start difference. First operand 83 states and 116 transitions. Second operand 9 states. [2020-10-14 04:54:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:22,740 INFO L93 Difference]: Finished difference Result 144 states and 202 transitions. [2020-10-14 04:54:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:54:22,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 04:54:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:22,742 INFO L225 Difference]: With dead ends: 144 [2020-10-14 04:54:22,742 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 04:54:22,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 04:54:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2020-10-14 04:54:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 04:54:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2020-10-14 04:54:22,751 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 24 [2020-10-14 04:54:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:22,751 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2020-10-14 04:54:22,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2020-10-14 04:54:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:54:22,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:22,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:22,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:54:22,753 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1978590594, now seen corresponding path program 1 times [2020-10-14 04:54:22,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:22,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107138594] [2020-10-14 04:54:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:23,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:54:23,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 04:54:23,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:23,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:54:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:54:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:23,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:23,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107138594] [2020-10-14 04:54:23,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:23,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:23,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425843042] [2020-10-14 04:54:23,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:23,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:23,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:23,295 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand 9 states. [2020-10-14 04:54:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:23,629 INFO L93 Difference]: Finished difference Result 126 states and 173 transitions. [2020-10-14 04:54:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:54:23,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 04:54:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:23,631 INFO L225 Difference]: With dead ends: 126 [2020-10-14 04:54:23,631 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 04:54:23,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 04:54:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 90. [2020-10-14 04:54:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 04:54:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2020-10-14 04:54:23,640 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 24 [2020-10-14 04:54:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:23,641 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2020-10-14 04:54:23,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2020-10-14 04:54:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:54:23,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:23,642 INFO L422 BasicCegarLoop]: trace histogram [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 04:54:23,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:54:23,643 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:23,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1986609468, now seen corresponding path program 1 times [2020-10-14 04:54:23,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:23,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402597370] [2020-10-14 04:54:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:54:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:54:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-14 04:54:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:54:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:24,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:24,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:24,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:24,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:24,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402597370] [2020-10-14 04:54:24,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:24,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:24,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284537157] [2020-10-14 04:54:24,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:24,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:24,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:24,441 INFO L87 Difference]: Start difference. First operand 90 states and 126 transitions. Second operand 8 states. [2020-10-14 04:54:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:24,693 INFO L93 Difference]: Finished difference Result 157 states and 219 transitions. [2020-10-14 04:54:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:24,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-14 04:54:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:24,695 INFO L225 Difference]: With dead ends: 157 [2020-10-14 04:54:24,695 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 04:54:24,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 04:54:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2020-10-14 04:54:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 04:54:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2020-10-14 04:54:24,704 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 26 [2020-10-14 04:54:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:24,704 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2020-10-14 04:54:24,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2020-10-14 04:54:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:54:24,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:24,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:24,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:54:24,706 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1177260920, now seen corresponding path program 1 times [2020-10-14 04:54:24,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:24,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218475245] [2020-10-14 04:54:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:25,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:54:25,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:54:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-14 04:54:25,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:25,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:54:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:25,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:25,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:25,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:25,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:25,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:25,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218475245] [2020-10-14 04:54:25,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:25,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:25,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815011645] [2020-10-14 04:54:25,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:25,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:25,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:25,621 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand 9 states. [2020-10-14 04:54:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:26,074 INFO L93 Difference]: Finished difference Result 162 states and 222 transitions. [2020-10-14 04:54:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:54:26,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-14 04:54:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:26,076 INFO L225 Difference]: With dead ends: 162 [2020-10-14 04:54:26,077 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 04:54:26,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:54:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 04:54:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 105. [2020-10-14 04:54:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 04:54:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 147 transitions. [2020-10-14 04:54:26,086 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 147 transitions. Word has length 26 [2020-10-14 04:54:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:26,086 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 147 transitions. [2020-10-14 04:54:26,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 147 transitions. [2020-10-14 04:54:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:54:26,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:26,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:26,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:54:26,088 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:26,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1609413667, now seen corresponding path program 2 times [2020-10-14 04:54:26,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:26,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055608607] [2020-10-14 04:54:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:26,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:26,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:26,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:54:26,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 04:54:26,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:26,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:54:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:26,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:26,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:26,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:26,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055608607] [2020-10-14 04:54:26,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:26,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:54:26,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627305137] [2020-10-14 04:54:26,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:54:26,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:26,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:54:26,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:54:26,640 INFO L87 Difference]: Start difference. First operand 105 states and 147 transitions. Second operand 7 states. [2020-10-14 04:54:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:26,874 INFO L93 Difference]: Finished difference Result 189 states and 266 transitions. [2020-10-14 04:54:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:54:26,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 04:54:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:26,877 INFO L225 Difference]: With dead ends: 189 [2020-10-14 04:54:26,877 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 04:54:26,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 04:54:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2020-10-14 04:54:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 04:54:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2020-10-14 04:54:26,887 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 28 [2020-10-14 04:54:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:26,887 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2020-10-14 04:54:26,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:54:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2020-10-14 04:54:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:54:26,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:26,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:26,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:54:26,889 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:26,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1528741190, now seen corresponding path program 2 times [2020-10-14 04:54:26,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:26,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804772528] [2020-10-14 04:54:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:27,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:54:27,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 04:54:27,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:27,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:54:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:27,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:27,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:27,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:27,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:27,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:27,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:27,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:27,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:27,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804772528] [2020-10-14 04:54:27,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:27,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:54:27,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750062338] [2020-10-14 04:54:27,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:54:27,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:54:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:27,321 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand 10 states. [2020-10-14 04:54:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:27,754 INFO L93 Difference]: Finished difference Result 156 states and 208 transitions. [2020-10-14 04:54:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:54:27,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-14 04:54:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:27,756 INFO L225 Difference]: With dead ends: 156 [2020-10-14 04:54:27,757 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 04:54:27,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:54:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 04:54:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2020-10-14 04:54:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 04:54:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2020-10-14 04:54:27,770 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 28 [2020-10-14 04:54:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:27,770 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2020-10-14 04:54:27,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:54:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2020-10-14 04:54:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:54:27,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:27,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:27,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:54:27,772 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1528743112, now seen corresponding path program 2 times [2020-10-14 04:54:27,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:27,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773100313] [2020-10-14 04:54:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:28,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:54:28,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:28,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 04:54:28,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:28,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:54:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:28,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:28,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:28,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:28,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:54:28,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:28,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:28,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773100313] [2020-10-14 04:54:28,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:28,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:54:28,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427804818] [2020-10-14 04:54:28,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:54:28,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:28,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:54:28,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:28,438 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand 10 states. [2020-10-14 04:54:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:29,276 INFO L93 Difference]: Finished difference Result 230 states and 314 transitions. [2020-10-14 04:54:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:54:29,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-14 04:54:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:29,279 INFO L225 Difference]: With dead ends: 230 [2020-10-14 04:54:29,279 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 04:54:29,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 04:54:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 164. [2020-10-14 04:54:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 04:54:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2020-10-14 04:54:29,297 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 28 [2020-10-14 04:54:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:29,298 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2020-10-14 04:54:29,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:54:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2020-10-14 04:54:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:54:29,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:29,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:29,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:54:29,300 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:29,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1585999492, now seen corresponding path program 2 times [2020-10-14 04:54:29,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:29,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556826762] [2020-10-14 04:54:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:29,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:29,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:54:29,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 04:54:29,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:29,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:54:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:30,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:30,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:30,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:30,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:30,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:30,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556826762] [2020-10-14 04:54:30,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:30,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:54:30,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565983045] [2020-10-14 04:54:30,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:54:30,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:54:30,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:30,141 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand 10 states. [2020-10-14 04:54:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:30,693 INFO L93 Difference]: Finished difference Result 231 states and 310 transitions. [2020-10-14 04:54:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:54:30,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-14 04:54:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:30,695 INFO L225 Difference]: With dead ends: 231 [2020-10-14 04:54:30,695 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 04:54:30,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 04:54:30,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 173. [2020-10-14 04:54:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 04:54:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 240 transitions. [2020-10-14 04:54:30,710 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 240 transitions. Word has length 28 [2020-10-14 04:54:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:30,711 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 240 transitions. [2020-10-14 04:54:30,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:54:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 240 transitions. [2020-10-14 04:54:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:54:30,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:30,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:30,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:54:30,712 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash -525995879, now seen corresponding path program 2 times [2020-10-14 04:54:30,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:30,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793450383] [2020-10-14 04:54:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:31,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:54:31,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:54:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-14 04:54:31,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:31,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:54:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:31,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:31,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:31,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793450383] [2020-10-14 04:54:31,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:31,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:31,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919244968] [2020-10-14 04:54:31,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:31,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:31,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:31,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:31,457 INFO L87 Difference]: Start difference. First operand 173 states and 240 transitions. Second operand 8 states. [2020-10-14 04:54:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:31,665 INFO L93 Difference]: Finished difference Result 213 states and 288 transitions. [2020-10-14 04:54:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:31,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-14 04:54:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:31,668 INFO L225 Difference]: With dead ends: 213 [2020-10-14 04:54:31,668 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 04:54:31,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 04:54:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2020-10-14 04:54:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 04:54:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 259 transitions. [2020-10-14 04:54:31,683 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 259 transitions. Word has length 30 [2020-10-14 04:54:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:31,683 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 259 transitions. [2020-10-14 04:54:31,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 259 transitions. [2020-10-14 04:54:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:54:31,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:31,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:31,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:54:31,684 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1335344427, now seen corresponding path program 1 times [2020-10-14 04:54:31,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:31,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699444006] [2020-10-14 04:54:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:31,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:54:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 04:54:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:32,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:54:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:32,395 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-14 04:54:32,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:32,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:32,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:32,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:32,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:32,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:32,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:54:32,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699444006] [2020-10-14 04:54:32,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:32,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:32,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550901012] [2020-10-14 04:54:32,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:32,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:32,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:32,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:32,458 INFO L87 Difference]: Start difference. First operand 189 states and 259 transitions. Second operand 8 states. [2020-10-14 04:54:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:32,882 INFO L93 Difference]: Finished difference Result 199 states and 268 transitions. [2020-10-14 04:54:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:32,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-14 04:54:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:32,884 INFO L225 Difference]: With dead ends: 199 [2020-10-14 04:54:32,884 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 04:54:32,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 04:54:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 165. [2020-10-14 04:54:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 04:54:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 228 transitions. [2020-10-14 04:54:32,898 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 228 transitions. Word has length 30 [2020-10-14 04:54:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:32,898 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 228 transitions. [2020-10-14 04:54:32,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 228 transitions. [2020-10-14 04:54:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:54:32,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:32,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:32,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:54:32,899 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1614159849, now seen corresponding path program 3 times [2020-10-14 04:54:32,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:32,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761894840] [2020-10-14 04:54:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:33,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:54:33,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 04:54:33,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:33,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:54:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:33,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:33,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:33,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:33,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:33,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761894840] [2020-10-14 04:54:33,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:33,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:33,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601651721] [2020-10-14 04:54:33,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:33,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:33,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:33,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:33,338 INFO L87 Difference]: Start difference. First operand 165 states and 228 transitions. Second operand 9 states. [2020-10-14 04:54:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:33,910 INFO L93 Difference]: Finished difference Result 220 states and 305 transitions. [2020-10-14 04:54:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:33,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 04:54:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:33,913 INFO L225 Difference]: With dead ends: 220 [2020-10-14 04:54:33,913 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 04:54:33,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 04:54:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2020-10-14 04:54:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 04:54:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 239 transitions. [2020-10-14 04:54:33,931 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 239 transitions. Word has length 30 [2020-10-14 04:54:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:33,931 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 239 transitions. [2020-10-14 04:54:33,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 239 transitions. [2020-10-14 04:54:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:54:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:33,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:33,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:54:33,933 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:33,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash 173779906, now seen corresponding path program 2 times [2020-10-14 04:54:33,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:33,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924901994] [2020-10-14 04:54:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:54:34,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:54:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-14 04:54:34,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:34,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:54:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:34,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:34,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924901994] [2020-10-14 04:54:34,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:34,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:34,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792419747] [2020-10-14 04:54:34,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:34,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:34,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:34,985 INFO L87 Difference]: Start difference. First operand 175 states and 239 transitions. Second operand 9 states. [2020-10-14 04:54:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:35,262 INFO L93 Difference]: Finished difference Result 271 states and 373 transitions. [2020-10-14 04:54:35,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:35,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 04:54:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:35,266 INFO L225 Difference]: With dead ends: 271 [2020-10-14 04:54:35,266 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 04:54:35,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:54:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 04:54:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-10-14 04:54:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 04:54:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2020-10-14 04:54:35,282 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 30 [2020-10-14 04:54:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:35,283 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2020-10-14 04:54:35,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2020-10-14 04:54:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:54:35,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:35,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:35,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:54:35,284 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -635568642, now seen corresponding path program 2 times [2020-10-14 04:54:35,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:35,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271318644] [2020-10-14 04:54:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:35,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:36,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:36,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:54:36,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:54:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-14 04:54:36,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:36,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:54:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:36,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:36,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:36,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271318644] [2020-10-14 04:54:36,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:36,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:54:36,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021084710] [2020-10-14 04:54:36,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:54:36,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:36,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:54:36,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:36,390 INFO L87 Difference]: Start difference. First operand 182 states and 247 transitions. Second operand 10 states. [2020-10-14 04:54:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:36,833 INFO L93 Difference]: Finished difference Result 272 states and 365 transitions. [2020-10-14 04:54:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:54:36,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-14 04:54:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:36,836 INFO L225 Difference]: With dead ends: 272 [2020-10-14 04:54:36,836 INFO L226 Difference]: Without dead ends: 270 [2020-10-14 04:54:36,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:54:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-14 04:54:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 176. [2020-10-14 04:54:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 04:54:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 240 transitions. [2020-10-14 04:54:36,851 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 240 transitions. Word has length 30 [2020-10-14 04:54:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:36,851 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 240 transitions. [2020-10-14 04:54:36,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:54:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 240 transitions. [2020-10-14 04:54:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:54:36,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:36,852 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] [2020-10-14 04:54:36,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:54:36,853 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:36,853 INFO L82 PathProgramCache]: Analyzing trace with hash 18101349, now seen corresponding path program 3 times [2020-10-14 04:54:36,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:36,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65478034] [2020-10-14 04:54:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:54:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-14 04:54:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:54:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:37,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:37,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:37,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:37,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:37,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:54:37,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65478034] [2020-10-14 04:54:37,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:37,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:54:37,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521650979] [2020-10-14 04:54:37,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:54:37,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:37,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:54:37,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:54:37,626 INFO L87 Difference]: Start difference. First operand 176 states and 240 transitions. Second operand 7 states. [2020-10-14 04:54:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:37,847 INFO L93 Difference]: Finished difference Result 254 states and 351 transitions. [2020-10-14 04:54:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:54:37,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-14 04:54:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:37,849 INFO L225 Difference]: With dead ends: 254 [2020-10-14 04:54:37,849 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 04:54:37,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 04:54:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 176. [2020-10-14 04:54:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 04:54:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2020-10-14 04:54:37,864 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 32 [2020-10-14 04:54:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:37,864 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2020-10-14 04:54:37,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:54:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2020-10-14 04:54:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:54:37,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:37,865 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] [2020-10-14 04:54:37,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:54:37,865 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:37,866 INFO L82 PathProgramCache]: Analyzing trace with hash 656732581, now seen corresponding path program 4 times [2020-10-14 04:54:37,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:37,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159942826] [2020-10-14 04:54:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:54:38,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:54:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-14 04:54:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:38,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:54:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:38,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:38,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:38,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:38,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:38,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159942826] [2020-10-14 04:54:38,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:38,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:38,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006613507] [2020-10-14 04:54:38,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:38,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:38,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:38,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:38,777 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand 9 states. [2020-10-14 04:54:39,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:39,072 INFO L93 Difference]: Finished difference Result 261 states and 356 transitions. [2020-10-14 04:54:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:54:39,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-14 04:54:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:39,074 INFO L225 Difference]: With dead ends: 261 [2020-10-14 04:54:39,074 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 04:54:39,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 04:54:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 195. [2020-10-14 04:54:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 04:54:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 267 transitions. [2020-10-14 04:54:39,099 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 267 transitions. Word has length 32 [2020-10-14 04:54:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:39,099 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 267 transitions. [2020-10-14 04:54:39,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 267 transitions. [2020-10-14 04:54:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:54:39,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:39,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:39,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:54:39,100 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash -152615967, now seen corresponding path program 1 times [2020-10-14 04:54:39,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:39,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379636561] [2020-10-14 04:54:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:39,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:41,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:41,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:54:41,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:54:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2189 [2020-10-14 04:54:41,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:41,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:54:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:54:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:41,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:41,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:41,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:41,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:41,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:41,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:41,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:41,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:41,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:41,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379636561] [2020-10-14 04:54:41,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:41,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:41,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365564078] [2020-10-14 04:54:41,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:41,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:41,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:41,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:41,541 INFO L87 Difference]: Start difference. First operand 195 states and 267 transitions. Second operand 12 states. [2020-10-14 04:54:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:42,119 INFO L93 Difference]: Finished difference Result 263 states and 361 transitions. [2020-10-14 04:54:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:54:42,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-14 04:54:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:42,121 INFO L225 Difference]: With dead ends: 263 [2020-10-14 04:54:42,121 INFO L226 Difference]: Without dead ends: 261 [2020-10-14 04:54:42,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:54:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-14 04:54:42,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 201. [2020-10-14 04:54:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-14 04:54:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2020-10-14 04:54:42,137 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 32 [2020-10-14 04:54:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:42,137 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2020-10-14 04:54:42,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2020-10-14 04:54:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:54:42,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:42,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:42,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:54:42,138 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1138713012, now seen corresponding path program 4 times [2020-10-14 04:54:42,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:42,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218376901] [2020-10-14 04:54:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:42,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:42,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:54:42,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 04:54:42,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:54:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:54:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:42,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:42,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:42,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:42,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:42,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:42,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:42,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218376901] [2020-10-14 04:54:42,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:42,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:54:42,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785072024] [2020-10-14 04:54:42,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:54:42,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:42,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:54:42,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:42,715 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand 11 states. [2020-10-14 04:54:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:43,335 INFO L93 Difference]: Finished difference Result 223 states and 299 transitions. [2020-10-14 04:54:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:54:43,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 04:54:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:43,338 INFO L225 Difference]: With dead ends: 223 [2020-10-14 04:54:43,338 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 04:54:43,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:54:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 04:54:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2020-10-14 04:54:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 04:54:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 280 transitions. [2020-10-14 04:54:43,356 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 280 transitions. Word has length 32 [2020-10-14 04:54:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:43,357 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 280 transitions. [2020-10-14 04:54:43,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:54:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 280 transitions. [2020-10-14 04:54:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:54:43,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:43,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:43,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:54:43,358 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1138711090, now seen corresponding path program 3 times [2020-10-14 04:54:43,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:43,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324443645] [2020-10-14 04:54:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:43,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:43,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:54:43,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 04:54:43,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:43,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:54:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:54:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:43,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:43,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:43,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:43,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:43,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:43,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:43,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324443645] [2020-10-14 04:54:43,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:43,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:54:43,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514583848] [2020-10-14 04:54:43,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:54:43,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:43,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:54:43,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:43,915 INFO L87 Difference]: Start difference. First operand 204 states and 280 transitions. Second operand 11 states. [2020-10-14 04:54:44,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:44,689 INFO L93 Difference]: Finished difference Result 286 states and 391 transitions. [2020-10-14 04:54:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:54:44,689 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 04:54:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:44,691 INFO L225 Difference]: With dead ends: 286 [2020-10-14 04:54:44,691 INFO L226 Difference]: Without dead ends: 245 [2020-10-14 04:54:44,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:54:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-14 04:54:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 202. [2020-10-14 04:54:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 04:54:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 276 transitions. [2020-10-14 04:54:44,707 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 276 transitions. Word has length 32 [2020-10-14 04:54:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:44,708 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 276 transitions. [2020-10-14 04:54:44,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:54:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 276 transitions. [2020-10-14 04:54:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:54:44,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:44,709 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:44,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:54:44,709 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:44,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1081454710, now seen corresponding path program 3 times [2020-10-14 04:54:44,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:44,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023267780] [2020-10-14 04:54:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:54:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 04:54:45,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:54:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:54:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:45,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:45,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:45,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:45,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:45,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:45,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023267780] [2020-10-14 04:54:45,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:45,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:54:45,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385047203] [2020-10-14 04:54:45,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:54:45,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:45,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:54:45,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:54:45,415 INFO L87 Difference]: Start difference. First operand 202 states and 276 transitions. Second operand 11 states. [2020-10-14 04:54:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:46,059 INFO L93 Difference]: Finished difference Result 226 states and 303 transitions. [2020-10-14 04:54:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:46,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 04:54:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:46,062 INFO L225 Difference]: With dead ends: 226 [2020-10-14 04:54:46,062 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 04:54:46,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:54:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 04:54:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 202. [2020-10-14 04:54:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 04:54:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 276 transitions. [2020-10-14 04:54:46,097 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 276 transitions. Word has length 32 [2020-10-14 04:54:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:46,097 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 276 transitions. [2020-10-14 04:54:46,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:54:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 276 transitions. [2020-10-14 04:54:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:54:46,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:46,098 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:46,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:54:46,099 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:46,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2008819857, now seen corresponding path program 5 times [2020-10-14 04:54:46,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:46,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820012161] [2020-10-14 04:54:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:54:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-14 04:54:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:46,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:54:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:54:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:46,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:46,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:54:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:46,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:46,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820012161] [2020-10-14 04:54:46,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:46,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:46,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197726753] [2020-10-14 04:54:46,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:46,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:46,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:46,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:46,771 INFO L87 Difference]: Start difference. First operand 202 states and 276 transitions. Second operand 12 states. [2020-10-14 04:54:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:47,489 INFO L93 Difference]: Finished difference Result 225 states and 302 transitions. [2020-10-14 04:54:47,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:54:47,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 04:54:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:47,493 INFO L225 Difference]: With dead ends: 225 [2020-10-14 04:54:47,493 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 04:54:47,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 04:54:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 207. [2020-10-14 04:54:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 04:54:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 282 transitions. [2020-10-14 04:54:47,508 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 282 transitions. Word has length 34 [2020-10-14 04:54:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:47,509 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 282 transitions. [2020-10-14 04:54:47,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 282 transitions. [2020-10-14 04:54:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:54:47,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:47,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:47,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:54:47,510 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:47,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2008817935, now seen corresponding path program 4 times [2020-10-14 04:54:47,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:47,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947991525] [2020-10-14 04:54:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:48,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:54:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-14 04:54:48,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:54:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:54:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:48,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:48,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:48,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947991525] [2020-10-14 04:54:48,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:48,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:48,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814076461] [2020-10-14 04:54:48,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:48,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:48,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:48,317 INFO L87 Difference]: Start difference. First operand 207 states and 282 transitions. Second operand 12 states. [2020-10-14 04:54:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:49,040 INFO L93 Difference]: Finished difference Result 287 states and 395 transitions. [2020-10-14 04:54:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:54:49,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 04:54:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:49,042 INFO L225 Difference]: With dead ends: 287 [2020-10-14 04:54:49,042 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 04:54:49,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:54:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 04:54:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 218. [2020-10-14 04:54:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 04:54:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 297 transitions. [2020-10-14 04:54:49,067 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 297 transitions. Word has length 34 [2020-10-14 04:54:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:49,067 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 297 transitions. [2020-10-14 04:54:49,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 297 transitions. [2020-10-14 04:54:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:54:49,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:49,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:49,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:54:49,069 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1951561555, now seen corresponding path program 1 times [2020-10-14 04:54:49,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:49,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823125777] [2020-10-14 04:54:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:49,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:54:49,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 04:54:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:49,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:54:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:54:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:49,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:49,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:49,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:49,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:49,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:49,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:49,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823125777] [2020-10-14 04:54:49,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:49,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:49,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052838794] [2020-10-14 04:54:49,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:49,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:49,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:49,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:49,739 INFO L87 Difference]: Start difference. First operand 218 states and 297 transitions. Second operand 12 states. [2020-10-14 04:54:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:50,535 INFO L93 Difference]: Finished difference Result 238 states and 319 transitions. [2020-10-14 04:54:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:54:50,535 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 04:54:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:50,537 INFO L225 Difference]: With dead ends: 238 [2020-10-14 04:54:50,537 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 04:54:50,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 04:54:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2020-10-14 04:54:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 04:54:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 300 transitions. [2020-10-14 04:54:50,575 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 300 transitions. Word has length 34 [2020-10-14 04:54:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:50,576 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 300 transitions. [2020-10-14 04:54:50,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 300 transitions. [2020-10-14 04:54:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:54:50,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:50,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:50,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:54:50,578 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:50,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:50,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1750654419, now seen corresponding path program 2 times [2020-10-14 04:54:50,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:50,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129545961] [2020-10-14 04:54:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:54:50,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:54:50,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 04:54:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:54:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:54:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:51,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:51,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:51,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:54:51,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129545961] [2020-10-14 04:54:51,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:51,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:51,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541981194] [2020-10-14 04:54:51,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:51,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:51,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:51,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:51,066 INFO L87 Difference]: Start difference. First operand 220 states and 300 transitions. Second operand 8 states. [2020-10-14 04:54:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:51,280 INFO L93 Difference]: Finished difference Result 263 states and 362 transitions. [2020-10-14 04:54:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:54:51,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-14 04:54:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:51,282 INFO L225 Difference]: With dead ends: 263 [2020-10-14 04:54:51,282 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 04:54:51,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 04:54:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2020-10-14 04:54:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 04:54:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2020-10-14 04:54:51,295 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 34 [2020-10-14 04:54:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:51,296 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2020-10-14 04:54:51,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2020-10-14 04:54:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:54:51,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:51,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:51,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:54:51,297 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1553080939, now seen corresponding path program 5 times [2020-10-14 04:54:51,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:51,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617140679] [2020-10-14 04:54:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:52,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:54:52,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:54:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-14 04:54:52,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:52,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:54:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:54:52,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617140679] [2020-10-14 04:54:52,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:52,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:54:52,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139580976] [2020-10-14 04:54:52,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:54:52,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:52,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:54:52,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:54:52,417 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand 8 states. [2020-10-14 04:54:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:52,633 INFO L93 Difference]: Finished difference Result 217 states and 292 transitions. [2020-10-14 04:54:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:54:52,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-14 04:54:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:52,635 INFO L225 Difference]: With dead ends: 217 [2020-10-14 04:54:52,635 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 04:54:52,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 04:54:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 149. [2020-10-14 04:54:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 04:54:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-10-14 04:54:52,648 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 36 [2020-10-14 04:54:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:52,649 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-10-14 04:54:52,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:54:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-10-14 04:54:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:54:52,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:52,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:52,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:54:52,650 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2103255125, now seen corresponding path program 6 times [2020-10-14 04:54:52,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:52,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435948392] [2020-10-14 04:54:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:53,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:54:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:54:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-14 04:54:53,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:53,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:54:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:54:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:53,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435948392] [2020-10-14 04:54:53,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:53,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:54:53,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659008757] [2020-10-14 04:54:53,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:54:53,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:54:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:54:53,922 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 10 states. [2020-10-14 04:54:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:54,255 INFO L93 Difference]: Finished difference Result 241 states and 320 transitions. [2020-10-14 04:54:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:54:54,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 04:54:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:54,257 INFO L225 Difference]: With dead ends: 241 [2020-10-14 04:54:54,257 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 04:54:54,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:54:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 04:54:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 147. [2020-10-14 04:54:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 04:54:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 192 transitions. [2020-10-14 04:54:54,270 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 192 transitions. Word has length 36 [2020-10-14 04:54:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:54,271 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 192 transitions. [2020-10-14 04:54:54,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:54:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 192 transitions. [2020-10-14 04:54:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:54:54,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:54,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:54,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:54:54,272 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1382363623, now seen corresponding path program 2 times [2020-10-14 04:54:54,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:54,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908634402] [2020-10-14 04:54:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:56,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:54:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 04:54:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-14 04:54:56,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:56,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:54:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:54:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:56,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:56,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:56,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:56,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:54:56,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908634402] [2020-10-14 04:54:56,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:56,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:56,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182525521] [2020-10-14 04:54:56,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:56,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:56,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:56,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:56,835 INFO L87 Difference]: Start difference. First operand 147 states and 192 transitions. Second operand 12 states. [2020-10-14 04:54:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:57,470 INFO L93 Difference]: Finished difference Result 240 states and 315 transitions. [2020-10-14 04:54:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:54:57,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-14 04:54:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:57,472 INFO L225 Difference]: With dead ends: 240 [2020-10-14 04:54:57,472 INFO L226 Difference]: Without dead ends: 238 [2020-10-14 04:54:57,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:54:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-14 04:54:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 152. [2020-10-14 04:54:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 04:54:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2020-10-14 04:54:57,485 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 36 [2020-10-14 04:54:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:57,485 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2020-10-14 04:54:57,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2020-10-14 04:54:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:54:57,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:57,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:57,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:54:57,489 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:57,489 INFO L82 PathProgramCache]: Analyzing trace with hash 464366204, now seen corresponding path program 3 times [2020-10-14 04:54:57,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:57,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877693175] [2020-10-14 04:54:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:58,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:54:58,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:54:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-14 04:54:58,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:58,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:54:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:54:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:58,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:58,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:58,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:54:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:54:58,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877693175] [2020-10-14 04:54:58,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:58,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:54:58,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460325152] [2020-10-14 04:54:58,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:54:58,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:54:58,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:54:58,556 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand 9 states. [2020-10-14 04:54:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:58,793 INFO L93 Difference]: Finished difference Result 174 states and 226 transitions. [2020-10-14 04:54:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:54:58,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 04:54:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:58,795 INFO L225 Difference]: With dead ends: 174 [2020-10-14 04:54:58,795 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 04:54:58,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:54:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 04:54:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2020-10-14 04:54:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-14 04:54:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2020-10-14 04:54:58,812 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 38 [2020-10-14 04:54:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:58,813 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2020-10-14 04:54:58,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:54:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2020-10-14 04:54:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:54:58,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:58,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:58,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:54:58,814 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash -189126004, now seen corresponding path program 1 times [2020-10-14 04:54:58,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:58,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883664311] [2020-10-14 04:54:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:59,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:54:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:54:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:59,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:54:59,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:54:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:54:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:54:59,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883664311] [2020-10-14 04:54:59,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:54:59,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:54:59,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759989071] [2020-10-14 04:54:59,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:54:59,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:54:59,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:54:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:54:59,343 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand 12 states. [2020-10-14 04:54:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:54:59,690 INFO L93 Difference]: Finished difference Result 237 states and 317 transitions. [2020-10-14 04:54:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:54:59,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-14 04:54:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:54:59,692 INFO L225 Difference]: With dead ends: 237 [2020-10-14 04:54:59,693 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 04:54:59,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:54:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 04:54:59,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 210. [2020-10-14 04:54:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 04:54:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 286 transitions. [2020-10-14 04:54:59,709 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 286 transitions. Word has length 38 [2020-10-14 04:54:59,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:54:59,709 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 286 transitions. [2020-10-14 04:54:59,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:54:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 286 transitions. [2020-10-14 04:54:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:54:59,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:54:59,710 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:54:59,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 04:54:59,711 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:54:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:54:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash -189124082, now seen corresponding path program 7 times [2020-10-14 04:54:59,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:54:59,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080330180] [2020-10-14 04:54:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:54:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:54:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:54:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:00,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:00,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:55:00,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-14 04:55:00,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:00,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:55:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:00,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:00,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080330180] [2020-10-14 04:55:00,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:00,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:00,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229413761] [2020-10-14 04:55:00,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:00,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:00,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:00,519 INFO L87 Difference]: Start difference. First operand 210 states and 286 transitions. Second operand 13 states. [2020-10-14 04:55:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:01,189 INFO L93 Difference]: Finished difference Result 508 states and 724 transitions. [2020-10-14 04:55:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:01,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:55:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:01,192 INFO L225 Difference]: With dead ends: 508 [2020-10-14 04:55:01,192 INFO L226 Difference]: Without dead ends: 434 [2020-10-14 04:55:01,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-14 04:55:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 357. [2020-10-14 04:55:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-14 04:55:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 507 transitions. [2020-10-14 04:55:01,220 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 507 transitions. Word has length 38 [2020-10-14 04:55:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:01,221 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 507 transitions. [2020-10-14 04:55:01,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 507 transitions. [2020-10-14 04:55:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:55:01,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:01,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:01,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 04:55:01,222 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1200243254, now seen corresponding path program 3 times [2020-10-14 04:55:01,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:01,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517905565] [2020-10-14 04:55:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:01,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:55:01,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:01,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-14 04:55:01,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:01,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:55:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:01,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:01,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:01,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:01,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:01,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:01,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:01,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:01,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517905565] [2020-10-14 04:55:01,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:01,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:01,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214617461] [2020-10-14 04:55:01,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:01,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:01,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:01,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:01,969 INFO L87 Difference]: Start difference. First operand 357 states and 507 transitions. Second operand 13 states. [2020-10-14 04:55:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:02,955 INFO L93 Difference]: Finished difference Result 489 states and 681 transitions. [2020-10-14 04:55:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:02,956 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:55:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:02,960 INFO L225 Difference]: With dead ends: 489 [2020-10-14 04:55:02,960 INFO L226 Difference]: Without dead ends: 487 [2020-10-14 04:55:02,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:55:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-10-14 04:55:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 362. [2020-10-14 04:55:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-14 04:55:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 510 transitions. [2020-10-14 04:55:03,002 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 510 transitions. Word has length 38 [2020-10-14 04:55:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:03,003 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 510 transitions. [2020-10-14 04:55:03,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 510 transitions. [2020-10-14 04:55:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:55:03,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:03,005 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:03,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 04:55:03,006 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:03,006 INFO L82 PathProgramCache]: Analyzing trace with hash -67216395, now seen corresponding path program 6 times [2020-10-14 04:55:03,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:03,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523652552] [2020-10-14 04:55:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:03,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:03,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:55:03,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-14 04:55:03,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:03,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:55:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:55:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:04,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:04,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523652552] [2020-10-14 04:55:04,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:04,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:04,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123253488] [2020-10-14 04:55:04,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:04,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:04,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:04,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:04,050 INFO L87 Difference]: Start difference. First operand 362 states and 510 transitions. Second operand 13 states. [2020-10-14 04:55:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:04,982 INFO L93 Difference]: Finished difference Result 399 states and 553 transitions. [2020-10-14 04:55:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:55:04,982 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:55:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:04,985 INFO L225 Difference]: With dead ends: 399 [2020-10-14 04:55:04,985 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 04:55:04,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 04:55:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 381. [2020-10-14 04:55:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 04:55:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 535 transitions. [2020-10-14 04:55:05,015 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 535 transitions. Word has length 38 [2020-10-14 04:55:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:05,016 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 535 transitions. [2020-10-14 04:55:05,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 535 transitions. [2020-10-14 04:55:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:55:05,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:05,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:05,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 04:55:05,018 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:05,018 INFO L82 PathProgramCache]: Analyzing trace with hash -67214473, now seen corresponding path program 5 times [2020-10-14 04:55:05,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:05,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635251283] [2020-10-14 04:55:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:05,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:05,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:55:05,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-14 04:55:05,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:05,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:55:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:55:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:06,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:06,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:55:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:06,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:06,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635251283] [2020-10-14 04:55:06,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:06,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:06,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893005145] [2020-10-14 04:55:06,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:06,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:06,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:06,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:06,402 INFO L87 Difference]: Start difference. First operand 381 states and 535 transitions. Second operand 13 states. [2020-10-14 04:55:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:07,333 INFO L93 Difference]: Finished difference Result 453 states and 636 transitions. [2020-10-14 04:55:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:07,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:55:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:07,336 INFO L225 Difference]: With dead ends: 453 [2020-10-14 04:55:07,336 INFO L226 Difference]: Without dead ends: 403 [2020-10-14 04:55:07,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:55:07,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-14 04:55:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 381. [2020-10-14 04:55:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 04:55:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 534 transitions. [2020-10-14 04:55:07,364 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 534 transitions. Word has length 38 [2020-10-14 04:55:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:07,365 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 534 transitions. [2020-10-14 04:55:07,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 534 transitions. [2020-10-14 04:55:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:55:07,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:07,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:07,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 04:55:07,367 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:07,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:07,367 INFO L82 PathProgramCache]: Analyzing trace with hash -9958093, now seen corresponding path program 3 times [2020-10-14 04:55:07,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:07,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395881661] [2020-10-14 04:55:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:07,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:07,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:55:07,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 04:55:07,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:07,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:55:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:55:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:08,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:08,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:08,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:08,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:08,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395881661] [2020-10-14 04:55:08,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:08,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:08,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148254077] [2020-10-14 04:55:08,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:08,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:08,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:08,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:08,264 INFO L87 Difference]: Start difference. First operand 381 states and 534 transitions. Second operand 13 states. [2020-10-14 04:55:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:09,250 INFO L93 Difference]: Finished difference Result 400 states and 554 transitions. [2020-10-14 04:55:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:09,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 04:55:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:09,253 INFO L225 Difference]: With dead ends: 400 [2020-10-14 04:55:09,253 INFO L226 Difference]: Without dead ends: 398 [2020-10-14 04:55:09,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-14 04:55:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 366. [2020-10-14 04:55:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-14 04:55:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 516 transitions. [2020-10-14 04:55:09,282 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 516 transitions. Word has length 38 [2020-10-14 04:55:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:09,284 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 516 transitions. [2020-10-14 04:55:09,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 516 transitions. [2020-10-14 04:55:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:55:09,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:09,285 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:09,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 04:55:09,285 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:09,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1429151864, now seen corresponding path program 8 times [2020-10-14 04:55:09,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:09,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599389353] [2020-10-14 04:55:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:55:12,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 04:55:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2834 [2020-10-14 04:55:12,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:55:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:55:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:12,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:12,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:12,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:12,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:12,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:12,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:55:12,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599389353] [2020-10-14 04:55:12,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:12,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:55:12,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953913837] [2020-10-14 04:55:12,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:55:12,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:12,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:55:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:55:12,547 INFO L87 Difference]: Start difference. First operand 366 states and 516 transitions. Second operand 10 states. [2020-10-14 04:55:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:12,971 INFO L93 Difference]: Finished difference Result 526 states and 737 transitions. [2020-10-14 04:55:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:55:12,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 04:55:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:12,976 INFO L225 Difference]: With dead ends: 526 [2020-10-14 04:55:12,976 INFO L226 Difference]: Without dead ends: 478 [2020-10-14 04:55:12,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-14 04:55:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 403. [2020-10-14 04:55:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-14 04:55:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 569 transitions. [2020-10-14 04:55:13,007 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 569 transitions. Word has length 40 [2020-10-14 04:55:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:13,008 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 569 transitions. [2020-10-14 04:55:13,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:55:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 569 transitions. [2020-10-14 04:55:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:55:13,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:13,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:13,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 04:55:13,009 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:13,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2056466884, now seen corresponding path program 4 times [2020-10-14 04:55:13,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:13,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793909397] [2020-10-14 04:55:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:55:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:55:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-14 04:55:14,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:14,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:55:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:55:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:14,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:55:14,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793909397] [2020-10-14 04:55:14,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:14,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:55:14,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267860071] [2020-10-14 04:55:14,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:55:14,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:55:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:55:14,602 INFO L87 Difference]: Start difference. First operand 403 states and 569 transitions. Second operand 9 states. [2020-10-14 04:55:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:14,922 INFO L93 Difference]: Finished difference Result 520 states and 727 transitions. [2020-10-14 04:55:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:14,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-14 04:55:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:14,926 INFO L225 Difference]: With dead ends: 520 [2020-10-14 04:55:14,927 INFO L226 Difference]: Without dead ends: 395 [2020-10-14 04:55:14,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:55:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-14 04:55:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 386. [2020-10-14 04:55:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-14 04:55:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 540 transitions. [2020-10-14 04:55:14,957 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 540 transitions. Word has length 40 [2020-10-14 04:55:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:14,957 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 540 transitions. [2020-10-14 04:55:14,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:55:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 540 transitions. [2020-10-14 04:55:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:55:14,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:14,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:14,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 04:55:14,959 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1619848920, now seen corresponding path program 7 times [2020-10-14 04:55:14,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:14,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257911508] [2020-10-14 04:55:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:55:15,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 04:55:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:55:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:55:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:15,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:15,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:15,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:15,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:15,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257911508] [2020-10-14 04:55:15,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:15,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:55:15,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875314382] [2020-10-14 04:55:15,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:55:15,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:15,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:55:15,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:55:15,711 INFO L87 Difference]: Start difference. First operand 386 states and 540 transitions. Second operand 12 states. [2020-10-14 04:55:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:16,550 INFO L93 Difference]: Finished difference Result 467 states and 652 transitions. [2020-10-14 04:55:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:16,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 04:55:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:16,553 INFO L225 Difference]: With dead ends: 467 [2020-10-14 04:55:16,554 INFO L226 Difference]: Without dead ends: 426 [2020-10-14 04:55:16,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:55:16,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-14 04:55:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 418. [2020-10-14 04:55:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 04:55:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 578 transitions. [2020-10-14 04:55:16,583 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 578 transitions. Word has length 40 [2020-10-14 04:55:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:16,583 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 578 transitions. [2020-10-14 04:55:16,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:55:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 578 transitions. [2020-10-14 04:55:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:16,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:16,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:16,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 04:55:16,585 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:16,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:16,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1190329362, now seen corresponding path program 2 times [2020-10-14 04:55:16,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:16,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374272197] [2020-10-14 04:55:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:17,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:17,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-14 04:55:17,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:17,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:17,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:17,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:17,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:17,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:17,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:17,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:17,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374272197] [2020-10-14 04:55:17,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:17,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:17,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208390806] [2020-10-14 04:55:17,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:17,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:17,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:17,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:17,842 INFO L87 Difference]: Start difference. First operand 418 states and 578 transitions. Second operand 13 states. [2020-10-14 04:55:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:19,022 INFO L93 Difference]: Finished difference Result 567 states and 781 transitions. [2020-10-14 04:55:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:55:19,027 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 04:55:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:19,030 INFO L225 Difference]: With dead ends: 567 [2020-10-14 04:55:19,030 INFO L226 Difference]: Without dead ends: 565 [2020-10-14 04:55:19,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:55:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-14 04:55:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 418. [2020-10-14 04:55:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 04:55:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 578 transitions. [2020-10-14 04:55:19,061 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 578 transitions. Word has length 42 [2020-10-14 04:55:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:19,061 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 578 transitions. [2020-10-14 04:55:19,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 578 transitions. [2020-10-14 04:55:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:19,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:19,062 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:19,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 04:55:19,063 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:19,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1828962516, now seen corresponding path program 9 times [2020-10-14 04:55:19,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:19,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756215053] [2020-10-14 04:55:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:21,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2328 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:21,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:21,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:21,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:21,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:21,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:21,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:21,695 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 04:55:21,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756215053] [2020-10-14 04:55:21,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:21,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:55:21,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544413559] [2020-10-14 04:55:21,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:55:21,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:21,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:55:21,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:55:21,697 INFO L87 Difference]: Start difference. First operand 418 states and 578 transitions. Second operand 11 states. [2020-10-14 04:55:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:22,163 INFO L93 Difference]: Finished difference Result 728 states and 1019 transitions. [2020-10-14 04:55:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:55:22,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 04:55:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:22,166 INFO L225 Difference]: With dead ends: 728 [2020-10-14 04:55:22,166 INFO L226 Difference]: Without dead ends: 622 [2020-10-14 04:55:22,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-10-14 04:55:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 511. [2020-10-14 04:55:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-14 04:55:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 715 transitions. [2020-10-14 04:55:22,202 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 715 transitions. Word has length 42 [2020-10-14 04:55:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:22,203 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 715 transitions. [2020-10-14 04:55:22,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:55:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 715 transitions. [2020-10-14 04:55:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:22,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:22,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:22,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 04:55:22,205 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1019613968, now seen corresponding path program 5 times [2020-10-14 04:55:22,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:22,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751164171] [2020-10-14 04:55:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:24,500 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 04:55:24,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751164171] [2020-10-14 04:55:24,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:24,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:24,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838824437] [2020-10-14 04:55:24,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:24,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:24,502 INFO L87 Difference]: Start difference. First operand 511 states and 715 transitions. Second operand 15 states. [2020-10-14 04:55:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:25,220 INFO L93 Difference]: Finished difference Result 771 states and 1082 transitions. [2020-10-14 04:55:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:55:25,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-14 04:55:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:25,224 INFO L225 Difference]: With dead ends: 771 [2020-10-14 04:55:25,224 INFO L226 Difference]: Without dead ends: 769 [2020-10-14 04:55:25,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:55:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-14 04:55:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 549. [2020-10-14 04:55:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-14 04:55:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 769 transitions. [2020-10-14 04:55:25,261 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 769 transitions. Word has length 42 [2020-10-14 04:55:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:25,262 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 769 transitions. [2020-10-14 04:55:25,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 769 transitions. [2020-10-14 04:55:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:25,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:25,263 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:25,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 04:55:25,264 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:25,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:25,264 INFO L82 PathProgramCache]: Analyzing trace with hash 179214034, now seen corresponding path program 1 times [2020-10-14 04:55:25,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:25,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642047869] [2020-10-14 04:55:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:26,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:26,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:55:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-10-14 04:55:26,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:26,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:26,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:26,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:26,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:26,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:26,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:26,700 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 04:55:26,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642047869] [2020-10-14 04:55:26,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:26,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:55:26,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777740506] [2020-10-14 04:55:26,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:55:26,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:26,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:55:26,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:55:26,702 INFO L87 Difference]: Start difference. First operand 549 states and 769 transitions. Second operand 13 states. [2020-10-14 04:55:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:27,816 INFO L93 Difference]: Finished difference Result 788 states and 1117 transitions. [2020-10-14 04:55:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:55:27,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 04:55:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:27,819 INFO L225 Difference]: With dead ends: 788 [2020-10-14 04:55:27,819 INFO L226 Difference]: Without dead ends: 610 [2020-10-14 04:55:27,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-14 04:55:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 583. [2020-10-14 04:55:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-10-14 04:55:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 816 transitions. [2020-10-14 04:55:27,857 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 816 transitions. Word has length 42 [2020-10-14 04:55:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:27,857 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 816 transitions. [2020-10-14 04:55:27,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:55:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 816 transitions. [2020-10-14 04:55:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:27,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:27,859 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:27,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 04:55:27,859 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:27,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:27,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1312238971, now seen corresponding path program 8 times [2020-10-14 04:55:27,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:27,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941061156] [2020-10-14 04:55:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:28,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941061156] [2020-10-14 04:55:28,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:28,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:55:28,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522775449] [2020-10-14 04:55:28,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:55:28,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:28,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:55:28,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:55:28,876 INFO L87 Difference]: Start difference. First operand 583 states and 816 transitions. Second operand 14 states. [2020-10-14 04:55:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:29,954 INFO L93 Difference]: Finished difference Result 597 states and 828 transitions. [2020-10-14 04:55:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:55:29,955 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 04:55:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:29,958 INFO L225 Difference]: With dead ends: 597 [2020-10-14 04:55:29,958 INFO L226 Difference]: Without dead ends: 595 [2020-10-14 04:55:29,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-14 04:55:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 583. [2020-10-14 04:55:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-10-14 04:55:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 816 transitions. [2020-10-14 04:55:29,997 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 816 transitions. Word has length 42 [2020-10-14 04:55:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:29,997 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 816 transitions. [2020-10-14 04:55:29,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:55:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 816 transitions. [2020-10-14 04:55:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:29,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:29,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:29,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 04:55:29,999 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1312240893, now seen corresponding path program 6 times [2020-10-14 04:55:30,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:30,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938650820] [2020-10-14 04:55:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:30,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:30,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:30,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:30,771 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-14 04:55:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:31,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:31,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:31,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938650820] [2020-10-14 04:55:31,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:31,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:55:31,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777606068] [2020-10-14 04:55:31,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:55:31,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:31,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:55:31,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:55:31,173 INFO L87 Difference]: Start difference. First operand 583 states and 816 transitions. Second operand 14 states. [2020-10-14 04:55:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:32,192 INFO L93 Difference]: Finished difference Result 677 states and 949 transitions. [2020-10-14 04:55:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:32,193 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 04:55:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:32,195 INFO L225 Difference]: With dead ends: 677 [2020-10-14 04:55:32,195 INFO L226 Difference]: Without dead ends: 595 [2020-10-14 04:55:32,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-14 04:55:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 579. [2020-10-14 04:55:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-14 04:55:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 808 transitions. [2020-10-14 04:55:32,232 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 808 transitions. Word has length 42 [2020-10-14 04:55:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:32,233 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 808 transitions. [2020-10-14 04:55:32,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:55:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 808 transitions. [2020-10-14 04:55:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:55:32,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:32,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:32,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 04:55:32,234 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:32,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1369497273, now seen corresponding path program 4 times [2020-10-14 04:55:32,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:32,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321404706] [2020-10-14 04:55:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:32,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:32,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:33,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:33,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:33,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:33,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:33,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:33,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321404706] [2020-10-14 04:55:33,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:33,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:55:33,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809167021] [2020-10-14 04:55:33,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:55:33,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:55:33,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:55:33,373 INFO L87 Difference]: Start difference. First operand 579 states and 808 transitions. Second operand 14 states. [2020-10-14 04:55:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:34,497 INFO L93 Difference]: Finished difference Result 594 states and 821 transitions. [2020-10-14 04:55:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:34,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 04:55:34,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:34,500 INFO L225 Difference]: With dead ends: 594 [2020-10-14 04:55:34,500 INFO L226 Difference]: Without dead ends: 592 [2020-10-14 04:55:34,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-10-14 04:55:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 559. [2020-10-14 04:55:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 04:55:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 782 transitions. [2020-10-14 04:55:34,534 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 782 transitions. Word has length 42 [2020-10-14 04:55:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:34,534 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 782 transitions. [2020-10-14 04:55:34,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:55:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 782 transitions. [2020-10-14 04:55:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:55:34,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:34,536 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:34,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 04:55:34,536 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:34,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1077037003, now seen corresponding path program 3 times [2020-10-14 04:55:34,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:34,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623758827] [2020-10-14 04:55:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:34,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:34,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 04:55:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:35,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:35,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:35,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:55:35,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623758827] [2020-10-14 04:55:35,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:35,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:55:35,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980737276] [2020-10-14 04:55:35,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:55:35,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:55:35,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:55:35,495 INFO L87 Difference]: Start difference. First operand 559 states and 782 transitions. Second operand 11 states. [2020-10-14 04:55:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:36,112 INFO L93 Difference]: Finished difference Result 808 states and 1129 transitions. [2020-10-14 04:55:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:55:36,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-14 04:55:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:36,117 INFO L225 Difference]: With dead ends: 808 [2020-10-14 04:55:36,117 INFO L226 Difference]: Without dead ends: 651 [2020-10-14 04:55:36,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:55:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-14 04:55:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 643. [2020-10-14 04:55:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-14 04:55:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 881 transitions. [2020-10-14 04:55:36,178 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 881 transitions. Word has length 44 [2020-10-14 04:55:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:36,178 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 881 transitions. [2020-10-14 04:55:36,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:55:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 881 transitions. [2020-10-14 04:55:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:55:36,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:36,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:36,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 04:55:36,182 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:36,182 INFO L82 PathProgramCache]: Analyzing trace with hash 131561182, now seen corresponding path program 9 times [2020-10-14 04:55:36,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:36,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067823442] [2020-10-14 04:55:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:36,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:55:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:36,992 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-14 04:55:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:37,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:37,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067823442] [2020-10-14 04:55:37,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:37,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:37,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997145836] [2020-10-14 04:55:37,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:37,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:37,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:37,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:37,372 INFO L87 Difference]: Start difference. First operand 643 states and 881 transitions. Second operand 15 states. [2020-10-14 04:55:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:38,643 INFO L93 Difference]: Finished difference Result 684 states and 930 transitions. [2020-10-14 04:55:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:55:38,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:55:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:38,646 INFO L225 Difference]: With dead ends: 684 [2020-10-14 04:55:38,646 INFO L226 Difference]: Without dead ends: 682 [2020-10-14 04:55:38,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:55:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-14 04:55:38,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 668. [2020-10-14 04:55:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-14 04:55:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 914 transitions. [2020-10-14 04:55:38,677 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 914 transitions. Word has length 44 [2020-10-14 04:55:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:38,678 INFO L479 AbstractCegarLoop]: Abstraction has 668 states and 914 transitions. [2020-10-14 04:55:38,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 914 transitions. [2020-10-14 04:55:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:55:38,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:38,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:38,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 04:55:38,680 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash 131563104, now seen corresponding path program 7 times [2020-10-14 04:55:38,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:38,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711607863] [2020-10-14 04:55:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:55:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:55:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-14 04:55:39,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:39,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:55:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:39,866 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-14 04:55:40,000 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-14 04:55:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:40,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711607863] [2020-10-14 04:55:40,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:40,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:40,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21801288] [2020-10-14 04:55:40,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:40,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:40,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:40,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:40,312 INFO L87 Difference]: Start difference. First operand 668 states and 914 transitions. Second operand 15 states. [2020-10-14 04:55:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:41,617 INFO L93 Difference]: Finished difference Result 769 states and 1059 transitions. [2020-10-14 04:55:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:55:41,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:55:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:41,620 INFO L225 Difference]: With dead ends: 769 [2020-10-14 04:55:41,620 INFO L226 Difference]: Without dead ends: 710 [2020-10-14 04:55:41,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-14 04:55:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 679. [2020-10-14 04:55:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-14 04:55:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 928 transitions. [2020-10-14 04:55:41,664 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 928 transitions. Word has length 44 [2020-10-14 04:55:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:41,664 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 928 transitions. [2020-10-14 04:55:41,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 928 transitions. [2020-10-14 04:55:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:55:41,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:41,666 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:41,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 04:55:41,666 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash 188819484, now seen corresponding path program 5 times [2020-10-14 04:55:41,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:41,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827323151] [2020-10-14 04:55:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:42,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:55:42,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 04:55:42,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:42,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:55:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:42,326 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-14 04:55:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:42,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:42,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827323151] [2020-10-14 04:55:42,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:42,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:42,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440980473] [2020-10-14 04:55:42,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:42,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:42,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:42,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:42,787 INFO L87 Difference]: Start difference. First operand 679 states and 928 transitions. Second operand 15 states. [2020-10-14 04:55:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:44,152 INFO L93 Difference]: Finished difference Result 700 states and 951 transitions. [2020-10-14 04:55:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:44,153 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:55:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:44,155 INFO L225 Difference]: With dead ends: 700 [2020-10-14 04:55:44,156 INFO L226 Difference]: Without dead ends: 698 [2020-10-14 04:55:44,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:55:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-14 04:55:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 681. [2020-10-14 04:55:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-14 04:55:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 930 transitions. [2020-10-14 04:55:44,187 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 930 transitions. Word has length 44 [2020-10-14 04:55:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:44,187 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 930 transitions. [2020-10-14 04:55:44,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 930 transitions. [2020-10-14 04:55:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:55:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:44,189 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:44,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 04:55:44,189 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash 389726620, now seen corresponding path program 6 times [2020-10-14 04:55:44,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:44,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733221725] [2020-10-14 04:55:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:45,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:45,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:55:45,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:45,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-14 04:55:45,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:45,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:55:45,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:45,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:45,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:55:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:45,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733221725] [2020-10-14 04:55:45,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:45,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:45,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302202963] [2020-10-14 04:55:45,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:46,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:46,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:46,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:46,000 INFO L87 Difference]: Start difference. First operand 681 states and 930 transitions. Second operand 15 states. [2020-10-14 04:55:46,726 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-14 04:55:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:47,334 INFO L93 Difference]: Finished difference Result 702 states and 953 transitions. [2020-10-14 04:55:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:55:47,335 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:55:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:47,337 INFO L225 Difference]: With dead ends: 702 [2020-10-14 04:55:47,338 INFO L226 Difference]: Without dead ends: 700 [2020-10-14 04:55:47,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-14 04:55:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 679. [2020-10-14 04:55:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-14 04:55:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 927 transitions. [2020-10-14 04:55:47,369 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 927 transitions. Word has length 44 [2020-10-14 04:55:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:47,370 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 927 transitions. [2020-10-14 04:55:47,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:47,370 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 927 transitions. [2020-10-14 04:55:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:55:47,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:47,371 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:47,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 04:55:47,372 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:47,372 INFO L82 PathProgramCache]: Analyzing trace with hash 446984922, now seen corresponding path program 7 times [2020-10-14 04:55:47,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:47,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304611847] [2020-10-14 04:55:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:47,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:47,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:55:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:48,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:48,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:48,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:55:48,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304611847] [2020-10-14 04:55:48,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:48,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:55:48,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519321877] [2020-10-14 04:55:48,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:55:48,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:55:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:55:48,582 INFO L87 Difference]: Start difference. First operand 679 states and 927 transitions. Second operand 15 states. [2020-10-14 04:55:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:49,902 INFO L93 Difference]: Finished difference Result 711 states and 964 transitions. [2020-10-14 04:55:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:55:49,903 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 04:55:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:49,906 INFO L225 Difference]: With dead ends: 711 [2020-10-14 04:55:49,906 INFO L226 Difference]: Without dead ends: 709 [2020-10-14 04:55:49,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:55:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-14 04:55:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 681. [2020-10-14 04:55:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-14 04:55:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 929 transitions. [2020-10-14 04:55:49,942 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 929 transitions. Word has length 44 [2020-10-14 04:55:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:49,942 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 929 transitions. [2020-10-14 04:55:49,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:55:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 929 transitions. [2020-10-14 04:55:49,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:55:49,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:49,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:49,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 04:55:49,944 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:49,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:49,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1285214559, now seen corresponding path program 4 times [2020-10-14 04:55:49,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:49,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754727010] [2020-10-14 04:55:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:55:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:55:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:55:51,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754727010] [2020-10-14 04:55:51,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:51,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:55:51,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508086357] [2020-10-14 04:55:51,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:55:51,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:51,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:55:51,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:55:51,201 INFO L87 Difference]: Start difference. First operand 681 states and 929 transitions. Second operand 10 states. [2020-10-14 04:55:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:51,542 INFO L93 Difference]: Finished difference Result 702 states and 954 transitions. [2020-10-14 04:55:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:55:51,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-14 04:55:51,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:51,545 INFO L225 Difference]: With dead ends: 702 [2020-10-14 04:55:51,545 INFO L226 Difference]: Without dead ends: 691 [2020-10-14 04:55:51,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:55:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-14 04:55:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2020-10-14 04:55:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 04:55:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 938 transitions. [2020-10-14 04:55:51,577 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 938 transitions. Word has length 46 [2020-10-14 04:55:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:51,577 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 938 transitions. [2020-10-14 04:55:51,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:55:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 938 transitions. [2020-10-14 04:55:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:55:51,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:51,578 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:51,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 04:55:51,578 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:51,579 INFO L82 PathProgramCache]: Analyzing trace with hash -13129999, now seen corresponding path program 10 times [2020-10-14 04:55:51,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:51,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273732893] [2020-10-14 04:55:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:54,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:54,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:55:54,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 04:55:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3365 [2020-10-14 04:55:54,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:54,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:55:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:55:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:55:54,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:55,491 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 7 [2020-10-14 04:55:55,681 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 7 [2020-10-14 04:55:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:55:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:55,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:55:55,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:55:55,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:55:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:55:55,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:55:55,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:55:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:55:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:55:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:55:55,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:55:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:55:55,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273732893] [2020-10-14 04:55:55,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:55:55,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:55:55,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444310059] [2020-10-14 04:55:55,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:55:55,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:55:55,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:55:55,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:55:55,763 INFO L87 Difference]: Start difference. First operand 689 states and 938 transitions. Second operand 11 states. [2020-10-14 04:55:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:55:56,217 INFO L93 Difference]: Finished difference Result 792 states and 1067 transitions. [2020-10-14 04:55:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:55:56,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-14 04:55:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:55:56,221 INFO L225 Difference]: With dead ends: 792 [2020-10-14 04:55:56,221 INFO L226 Difference]: Without dead ends: 744 [2020-10-14 04:55:56,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:55:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-14 04:55:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 733. [2020-10-14 04:55:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-14 04:55:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 992 transitions. [2020-10-14 04:55:56,257 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 992 transitions. Word has length 46 [2020-10-14 04:55:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:55:56,257 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 992 transitions. [2020-10-14 04:55:56,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:55:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 992 transitions. [2020-10-14 04:55:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:55:56,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:55:56,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:55:56,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 04:55:56,259 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:55:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:55:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -822478547, now seen corresponding path program 6 times [2020-10-14 04:55:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:55:56,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773406958] [2020-10-14 04:55:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:55:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:55:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:55:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:01,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:56:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 04:56:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:56:01,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:01,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:56:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:56:01,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:02,104 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 26 [2020-10-14 04:56:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:02,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 04:56:02,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773406958] [2020-10-14 04:56:02,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:02,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:56:02,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048528639] [2020-10-14 04:56:02,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:56:02,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:02,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:56:02,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:56:02,176 INFO L87 Difference]: Start difference. First operand 733 states and 992 transitions. Second operand 9 states. [2020-10-14 04:56:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:02,714 INFO L93 Difference]: Finished difference Result 744 states and 1003 transitions. [2020-10-14 04:56:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:56:02,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-14 04:56:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:02,718 INFO L225 Difference]: With dead ends: 744 [2020-10-14 04:56:02,718 INFO L226 Difference]: Without dead ends: 742 [2020-10-14 04:56:02,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:56:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-14 04:56:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 628. [2020-10-14 04:56:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-14 04:56:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 861 transitions. [2020-10-14 04:56:02,754 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 861 transitions. Word has length 46 [2020-10-14 04:56:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:02,755 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 861 transitions. [2020-10-14 04:56:02,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:56:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 861 transitions. [2020-10-14 04:56:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:56:02,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:02,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:02,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 04:56:02,756 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:02,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:02,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1169922712, now seen corresponding path program 4 times [2020-10-14 04:56:02,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:02,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653766096] [2020-10-14 04:56:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:56:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:56:04,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653766096] [2020-10-14 04:56:04,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:04,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:56:04,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058284866] [2020-10-14 04:56:04,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:56:04,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:56:04,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:56:04,435 INFO L87 Difference]: Start difference. First operand 628 states and 861 transitions. Second operand 13 states. [2020-10-14 04:56:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:05,428 INFO L93 Difference]: Finished difference Result 833 states and 1117 transitions. [2020-10-14 04:56:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:56:05,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 04:56:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:05,432 INFO L225 Difference]: With dead ends: 833 [2020-10-14 04:56:05,432 INFO L226 Difference]: Without dead ends: 831 [2020-10-14 04:56:05,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:56:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-14 04:56:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 547. [2020-10-14 04:56:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-14 04:56:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 741 transitions. [2020-10-14 04:56:05,462 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 741 transitions. Word has length 46 [2020-10-14 04:56:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:05,463 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 741 transitions. [2020-10-14 04:56:05,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:56:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 741 transitions. [2020-10-14 04:56:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:56:05,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:05,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:05,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 04:56:05,465 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:05,465 INFO L82 PathProgramCache]: Analyzing trace with hash 158807384, now seen corresponding path program 2 times [2020-10-14 04:56:05,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:05,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678793364] [2020-10-14 04:56:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:56:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:07,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:07,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:07,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:56:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:07,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678793364] [2020-10-14 04:56:07,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:07,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:56:07,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308366114] [2020-10-14 04:56:07,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:56:07,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:56:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:56:07,257 INFO L87 Difference]: Start difference. First operand 547 states and 741 transitions. Second operand 14 states. [2020-10-14 04:56:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:09,509 INFO L93 Difference]: Finished difference Result 1089 states and 1475 transitions. [2020-10-14 04:56:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:56:09,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-14 04:56:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:09,514 INFO L225 Difference]: With dead ends: 1089 [2020-10-14 04:56:09,514 INFO L226 Difference]: Without dead ends: 905 [2020-10-14 04:56:09,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:56:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-10-14 04:56:09,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 433. [2020-10-14 04:56:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-14 04:56:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 569 transitions. [2020-10-14 04:56:09,557 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 569 transitions. Word has length 46 [2020-10-14 04:56:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:09,557 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 569 transitions. [2020-10-14 04:56:09,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:56:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 569 transitions. [2020-10-14 04:56:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:09,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:09,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:09,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 04:56:09,559 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:09,560 INFO L82 PathProgramCache]: Analyzing trace with hash 787008827, now seen corresponding path program 5 times [2020-10-14 04:56:09,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:09,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321967602] [2020-10-14 04:56:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:10,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:10,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:56:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:10,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:10,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:10,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:10,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 04:56:10,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321967602] [2020-10-14 04:56:10,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:10,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:56:10,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983827645] [2020-10-14 04:56:10,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:56:10,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:56:10,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:56:10,605 INFO L87 Difference]: Start difference. First operand 433 states and 569 transitions. Second operand 10 states. [2020-10-14 04:56:11,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:11,264 INFO L93 Difference]: Finished difference Result 638 states and 854 transitions. [2020-10-14 04:56:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:56:11,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-14 04:56:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:11,267 INFO L225 Difference]: With dead ends: 638 [2020-10-14 04:56:11,267 INFO L226 Difference]: Without dead ends: 469 [2020-10-14 04:56:11,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-14 04:56:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 433. [2020-10-14 04:56:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-14 04:56:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 567 transitions. [2020-10-14 04:56:11,305 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 567 transitions. Word has length 48 [2020-10-14 04:56:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:11,305 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 567 transitions. [2020-10-14 04:56:11,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:56:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 567 transitions. [2020-10-14 04:56:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:11,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:11,307 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:11,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 04:56:11,307 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:11,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1136223621, now seen corresponding path program 6 times [2020-10-14 04:56:11,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:11,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350861075] [2020-10-14 04:56:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:11,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:11,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:12,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:12,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350861075] [2020-10-14 04:56:12,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:12,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:56:12,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974490725] [2020-10-14 04:56:12,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:56:12,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:12,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:56:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:56:12,611 INFO L87 Difference]: Start difference. First operand 433 states and 567 transitions. Second operand 15 states. [2020-10-14 04:56:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:13,836 INFO L93 Difference]: Finished difference Result 600 states and 800 transitions. [2020-10-14 04:56:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:56:13,837 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-14 04:56:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:13,840 INFO L225 Difference]: With dead ends: 600 [2020-10-14 04:56:13,840 INFO L226 Difference]: Without dead ends: 598 [2020-10-14 04:56:13,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:56:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-14 04:56:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 531. [2020-10-14 04:56:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-14 04:56:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 718 transitions. [2020-10-14 04:56:13,873 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 718 transitions. Word has length 48 [2020-10-14 04:56:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:13,873 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 718 transitions. [2020-10-14 04:56:13,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:56:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 718 transitions. [2020-10-14 04:56:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:13,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:13,874 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:13,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 04:56:13,874 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:13,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1136221699, now seen corresponding path program 11 times [2020-10-14 04:56:13,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:13,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193103385] [2020-10-14 04:56:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:15,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:15,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:15,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:15,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-14 04:56:15,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:15,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:56:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:15,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193103385] [2020-10-14 04:56:15,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:15,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:15,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10491447] [2020-10-14 04:56:15,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:15,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:15,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:15,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:15,439 INFO L87 Difference]: Start difference. First operand 531 states and 718 transitions. Second operand 16 states. [2020-10-14 04:56:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:16,638 INFO L93 Difference]: Finished difference Result 889 states and 1239 transitions. [2020-10-14 04:56:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:56:16,639 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:16,641 INFO L225 Difference]: With dead ends: 889 [2020-10-14 04:56:16,642 INFO L226 Difference]: Without dead ends: 760 [2020-10-14 04:56:16,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:56:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-14 04:56:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 663. [2020-10-14 04:56:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-14 04:56:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 913 transitions. [2020-10-14 04:56:16,695 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 913 transitions. Word has length 48 [2020-10-14 04:56:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:16,695 INFO L479 AbstractCegarLoop]: Abstraction has 663 states and 913 transitions. [2020-10-14 04:56:16,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 913 transitions. [2020-10-14 04:56:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:16,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:16,697 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:16,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 04:56:16,697 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:16,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1953872071, now seen corresponding path program 7 times [2020-10-14 04:56:16,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:16,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837282767] [2020-10-14 04:56:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:17,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:17,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:17,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:17,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-14 04:56:17,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:17,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:56:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:17,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:18,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:18,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:18,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:18,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:18,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837282767] [2020-10-14 04:56:18,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:18,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861113301] [2020-10-14 04:56:18,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:18,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:18,312 INFO L87 Difference]: Start difference. First operand 663 states and 913 transitions. Second operand 16 states. [2020-10-14 04:56:19,435 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-14 04:56:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:20,245 INFO L93 Difference]: Finished difference Result 762 states and 1035 transitions. [2020-10-14 04:56:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:56:20,246 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:20,249 INFO L225 Difference]: With dead ends: 762 [2020-10-14 04:56:20,249 INFO L226 Difference]: Without dead ends: 760 [2020-10-14 04:56:20,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:56:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-14 04:56:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 690. [2020-10-14 04:56:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-14 04:56:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 950 transitions. [2020-10-14 04:56:20,286 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 950 transitions. Word has length 48 [2020-10-14 04:56:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:20,287 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 950 transitions. [2020-10-14 04:56:20,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 950 transitions. [2020-10-14 04:56:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:20,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:20,288 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:20,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 04:56:20,288 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1896613769, now seen corresponding path program 8 times [2020-10-14 04:56:20,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:20,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275620477] [2020-10-14 04:56:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:56:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:21,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:21,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:21,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:21,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:21,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:21,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 42 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:56:21,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275620477] [2020-10-14 04:56:21,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:21,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:56:21,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031617347] [2020-10-14 04:56:21,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:56:21,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:21,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:56:21,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:56:21,625 INFO L87 Difference]: Start difference. First operand 690 states and 950 transitions. Second operand 10 states. [2020-10-14 04:56:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:22,028 INFO L93 Difference]: Finished difference Result 938 states and 1307 transitions. [2020-10-14 04:56:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:56:22,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-14 04:56:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:22,031 INFO L225 Difference]: With dead ends: 938 [2020-10-14 04:56:22,031 INFO L226 Difference]: Without dead ends: 649 [2020-10-14 04:56:22,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:56:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-14 04:56:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 619. [2020-10-14 04:56:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-14 04:56:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 835 transitions. [2020-10-14 04:56:22,070 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 835 transitions. Word has length 48 [2020-10-14 04:56:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:22,071 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 835 transitions. [2020-10-14 04:56:22,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:56:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 835 transitions. [2020-10-14 04:56:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:22,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:22,072 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:22,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 04:56:22,072 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:22,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1329977975, now seen corresponding path program 9 times [2020-10-14 04:56:22,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:22,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120140377] [2020-10-14 04:56:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:56:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:23,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:23,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:23,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:23,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:23,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:23,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120140377] [2020-10-14 04:56:23,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:23,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:23,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832062792] [2020-10-14 04:56:23,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:23,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:23,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:23,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:23,813 INFO L87 Difference]: Start difference. First operand 619 states and 835 transitions. Second operand 16 states. [2020-10-14 04:56:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:24,982 INFO L93 Difference]: Finished difference Result 708 states and 936 transitions. [2020-10-14 04:56:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:56:24,983 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:24,986 INFO L225 Difference]: With dead ends: 708 [2020-10-14 04:56:24,986 INFO L226 Difference]: Without dead ends: 706 [2020-10-14 04:56:24,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:56:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-14 04:56:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 519. [2020-10-14 04:56:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-10-14 04:56:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 689 transitions. [2020-10-14 04:56:25,020 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 689 transitions. Word has length 48 [2020-10-14 04:56:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:25,020 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 689 transitions. [2020-10-14 04:56:25,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 689 transitions. [2020-10-14 04:56:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:25,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:25,021 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:25,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 04:56:25,022 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:25,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:25,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1995607012, now seen corresponding path program 10 times [2020-10-14 04:56:25,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:25,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708080478] [2020-10-14 04:56:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:25,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:25,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,018 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-14 04:56:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:26,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:26,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:26,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:26,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:26,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:26,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708080478] [2020-10-14 04:56:26,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:26,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:26,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205529786] [2020-10-14 04:56:26,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:26,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:26,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:26,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:26,544 INFO L87 Difference]: Start difference. First operand 519 states and 689 transitions. Second operand 16 states. [2020-10-14 04:56:27,365 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-14 04:56:27,768 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-14 04:56:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:28,370 INFO L93 Difference]: Finished difference Result 595 states and 779 transitions. [2020-10-14 04:56:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:56:28,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:28,374 INFO L225 Difference]: With dead ends: 595 [2020-10-14 04:56:28,374 INFO L226 Difference]: Without dead ends: 593 [2020-10-14 04:56:28,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:56:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-14 04:56:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 544. [2020-10-14 04:56:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-14 04:56:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 722 transitions. [2020-10-14 04:56:28,426 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 722 transitions. Word has length 48 [2020-10-14 04:56:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:28,426 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 722 transitions. [2020-10-14 04:56:28,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 722 transitions. [2020-10-14 04:56:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:28,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:28,427 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:28,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 04:56:28,428 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1995608934, now seen corresponding path program 8 times [2020-10-14 04:56:28,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:28,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974294125] [2020-10-14 04:56:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:29,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:29,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:29,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 04:56:29,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:29,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:29,871 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-14 04:56:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:30,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974294125] [2020-10-14 04:56:30,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:30,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:30,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261970519] [2020-10-14 04:56:30,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:30,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:30,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:30,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:30,461 INFO L87 Difference]: Start difference. First operand 544 states and 722 transitions. Second operand 16 states. [2020-10-14 04:56:31,240 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 04:56:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:32,134 INFO L93 Difference]: Finished difference Result 685 states and 915 transitions. [2020-10-14 04:56:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:32,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:32,137 INFO L225 Difference]: With dead ends: 685 [2020-10-14 04:56:32,137 INFO L226 Difference]: Without dead ends: 620 [2020-10-14 04:56:32,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:56:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-14 04:56:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 556. [2020-10-14 04:56:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-14 04:56:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 737 transitions. [2020-10-14 04:56:32,169 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 737 transitions. Word has length 48 [2020-10-14 04:56:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:32,170 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 737 transitions. [2020-10-14 04:56:32,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 737 transitions. [2020-10-14 04:56:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:32,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:32,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:32,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 04:56:32,171 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:32,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:32,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2052865314, now seen corresponding path program 8 times [2020-10-14 04:56:32,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:32,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146838861] [2020-10-14 04:56:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:32,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:32,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:32,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 04:56:32,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:32,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:33,256 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-14 04:56:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:33,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146838861] [2020-10-14 04:56:33,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:33,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:33,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122191414] [2020-10-14 04:56:33,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:33,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:33,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:33,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:33,770 INFO L87 Difference]: Start difference. First operand 556 states and 737 transitions. Second operand 16 states. [2020-10-14 04:56:34,585 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-14 04:56:34,997 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-14 04:56:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:35,583 INFO L93 Difference]: Finished difference Result 608 states and 796 transitions. [2020-10-14 04:56:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:56:35,584 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:35,585 INFO L225 Difference]: With dead ends: 608 [2020-10-14 04:56:35,585 INFO L226 Difference]: Without dead ends: 606 [2020-10-14 04:56:35,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:56:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-14 04:56:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 547. [2020-10-14 04:56:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-14 04:56:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 725 transitions. [2020-10-14 04:56:35,624 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 725 transitions. Word has length 48 [2020-10-14 04:56:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:35,625 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 725 transitions. [2020-10-14 04:56:35,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 725 transitions. [2020-10-14 04:56:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:35,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:35,626 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:35,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 04:56:35,626 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2041194846, now seen corresponding path program 9 times [2020-10-14 04:56:35,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:35,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312039477] [2020-10-14 04:56:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:36,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:36,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 04:56:36,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:36,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:36,730 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-14 04:56:37,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:37,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312039477] [2020-10-14 04:56:37,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:37,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:37,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902080230] [2020-10-14 04:56:37,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:37,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:37,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:37,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:37,261 INFO L87 Difference]: Start difference. First operand 547 states and 725 transitions. Second operand 16 states. [2020-10-14 04:56:38,062 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-14 04:56:38,467 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-14 04:56:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:39,019 INFO L93 Difference]: Finished difference Result 600 states and 785 transitions. [2020-10-14 04:56:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:56:39,019 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:39,020 INFO L225 Difference]: With dead ends: 600 [2020-10-14 04:56:39,020 INFO L226 Difference]: Without dead ends: 598 [2020-10-14 04:56:39,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:56:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-14 04:56:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 544. [2020-10-14 04:56:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-14 04:56:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 721 transitions. [2020-10-14 04:56:39,053 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 721 transitions. Word has length 48 [2020-10-14 04:56:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:39,053 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 721 transitions. [2020-10-14 04:56:39,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 721 transitions. [2020-10-14 04:56:39,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:56:39,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:39,054 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:39,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 04:56:39,054 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:39,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1983936544, now seen corresponding path program 10 times [2020-10-14 04:56:39,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:39,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772709780] [2020-10-14 04:56:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:56:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:40,207 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-14 04:56:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:40,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:40,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:40,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:40,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:40,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772709780] [2020-10-14 04:56:40,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:40,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:40,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708604558] [2020-10-14 04:56:40,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:40,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:40,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:40,760 INFO L87 Difference]: Start difference. First operand 544 states and 721 transitions. Second operand 16 states. [2020-10-14 04:56:41,645 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-14 04:56:42,089 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-14 04:56:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:42,760 INFO L93 Difference]: Finished difference Result 604 states and 790 transitions. [2020-10-14 04:56:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:42,761 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-14 04:56:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:42,762 INFO L225 Difference]: With dead ends: 604 [2020-10-14 04:56:42,762 INFO L226 Difference]: Without dead ends: 602 [2020-10-14 04:56:42,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:56:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-10-14 04:56:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 523. [2020-10-14 04:56:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-14 04:56:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 695 transitions. [2020-10-14 04:56:42,795 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 695 transitions. Word has length 48 [2020-10-14 04:56:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:42,795 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 695 transitions. [2020-10-14 04:56:42,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:56:42,795 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 695 transitions. [2020-10-14 04:56:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:56:42,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:42,796 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:42,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 04:56:42,796 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:42,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:42,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1056895049, now seen corresponding path program 12 times [2020-10-14 04:56:42,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:42,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005414208] [2020-10-14 04:56:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:56:47,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 04:56:47,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 04:56:47,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 04:56:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:47,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:47,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 04:56:47,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005414208] [2020-10-14 04:56:47,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:47,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:56:47,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755060223] [2020-10-14 04:56:47,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:56:47,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:56:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:56:47,887 INFO L87 Difference]: Start difference. First operand 523 states and 695 transitions. Second operand 8 states. [2020-10-14 04:56:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:48,197 INFO L93 Difference]: Finished difference Result 954 states and 1285 transitions. [2020-10-14 04:56:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:56:48,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-14 04:56:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:48,200 INFO L225 Difference]: With dead ends: 954 [2020-10-14 04:56:48,200 INFO L226 Difference]: Without dead ends: 779 [2020-10-14 04:56:48,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:56:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-10-14 04:56:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 489. [2020-10-14 04:56:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-14 04:56:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 660 transitions. [2020-10-14 04:56:48,232 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 660 transitions. Word has length 50 [2020-10-14 04:56:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:48,232 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 660 transitions. [2020-10-14 04:56:48,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:56:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 660 transitions. [2020-10-14 04:56:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:56:48,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:48,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:48,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 04:56:48,234 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1866243597, now seen corresponding path program 10 times [2020-10-14 04:56:48,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:48,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033767567] [2020-10-14 04:56:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:50,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:50,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2505 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:56:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:50,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:50,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:50,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:50,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 04:56:50,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033767567] [2020-10-14 04:56:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:56:50,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214528556] [2020-10-14 04:56:50,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:56:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:56:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:56:50,824 INFO L87 Difference]: Start difference. First operand 489 states and 660 transitions. Second operand 8 states. [2020-10-14 04:56:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:51,149 INFO L93 Difference]: Finished difference Result 635 states and 850 transitions. [2020-10-14 04:56:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:56:51,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-14 04:56:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:51,151 INFO L225 Difference]: With dead ends: 635 [2020-10-14 04:56:51,151 INFO L226 Difference]: Without dead ends: 633 [2020-10-14 04:56:51,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:56:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-10-14 04:56:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 489. [2020-10-14 04:56:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-14 04:56:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 660 transitions. [2020-10-14 04:56:51,187 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 660 transitions. Word has length 50 [2020-10-14 04:56:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:51,187 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 660 transitions. [2020-10-14 04:56:51,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:56:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 660 transitions. [2020-10-14 04:56:51,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:56:51,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:51,188 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:51,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 04:56:51,188 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1803485433, now seen corresponding path program 11 times [2020-10-14 04:56:51,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:51,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479036226] [2020-10-14 04:56:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:51,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:56:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-14 04:56:51,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:51,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:56:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 04:56:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:51,991 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-14 04:56:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:52,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:52,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:52,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:52,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:52,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:52,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:56:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:52,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479036226] [2020-10-14 04:56:52,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:52,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:56:52,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256609474] [2020-10-14 04:56:52,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:56:52,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:56:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:56:52,465 INFO L87 Difference]: Start difference. First operand 489 states and 660 transitions. Second operand 15 states. [2020-10-14 04:56:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:53,798 INFO L93 Difference]: Finished difference Result 631 states and 861 transitions. [2020-10-14 04:56:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:56:53,800 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 04:56:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:53,801 INFO L225 Difference]: With dead ends: 631 [2020-10-14 04:56:53,801 INFO L226 Difference]: Without dead ends: 556 [2020-10-14 04:56:53,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:56:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-14 04:56:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 547. [2020-10-14 04:56:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-14 04:56:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 732 transitions. [2020-10-14 04:56:53,834 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 732 transitions. Word has length 50 [2020-10-14 04:56:53,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:53,834 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 732 transitions. [2020-10-14 04:56:53,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:56:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 732 transitions. [2020-10-14 04:56:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:56:53,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:53,835 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:53,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 04:56:53,835 INFO L427 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:53,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1060769983, now seen corresponding path program 7 times [2020-10-14 04:56:53,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:53,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667740435] [2020-10-14 04:56:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:55,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:56:55,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:56:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:55,257 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-14 04:56:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:55,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:55,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:55,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:55,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:55,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:55,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 34 proven. 29 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 04:56:55,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667740435] [2020-10-14 04:56:55,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:55,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:56:55,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881792209] [2020-10-14 04:56:55,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:56:55,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:55,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:56:55,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:56:55,479 INFO L87 Difference]: Start difference. First operand 547 states and 732 transitions. Second operand 11 states. [2020-10-14 04:56:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:56:56,065 INFO L93 Difference]: Finished difference Result 616 states and 835 transitions. [2020-10-14 04:56:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:56:56,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-14 04:56:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:56:56,067 INFO L225 Difference]: With dead ends: 616 [2020-10-14 04:56:56,067 INFO L226 Difference]: Without dead ends: 476 [2020-10-14 04:56:56,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:56:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-14 04:56:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 470. [2020-10-14 04:56:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-14 04:56:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 619 transitions. [2020-10-14 04:56:56,106 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 619 transitions. Word has length 52 [2020-10-14 04:56:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:56:56,106 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 619 transitions. [2020-10-14 04:56:56,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:56:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 619 transitions. [2020-10-14 04:56:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:56:56,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:56:56,107 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:56:56,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-14 04:56:56,108 INFO L427 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:56:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:56:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1310964865, now seen corresponding path program 8 times [2020-10-14 04:56:56,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:56:56,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856626478] [2020-10-14 04:56:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:56:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:57,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:57,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:56:57,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:56:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:56:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:56:58,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:56:58,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:56:58,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:56:58,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:56:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:56:58,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:56:58,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:56:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:56:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:56:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:56:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:56:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:56:58,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856626478] [2020-10-14 04:56:58,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:56:58,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:56:58,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377685474] [2020-10-14 04:56:58,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:56:58,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:56:58,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:56:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:56:58,614 INFO L87 Difference]: Start difference. First operand 470 states and 619 transitions. Second operand 16 states. [2020-10-14 04:57:00,006 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-10-14 04:57:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:00,423 INFO L93 Difference]: Finished difference Result 655 states and 881 transitions. [2020-10-14 04:57:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:57:00,424 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-10-14 04:57:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:00,426 INFO L225 Difference]: With dead ends: 655 [2020-10-14 04:57:00,426 INFO L226 Difference]: Without dead ends: 653 [2020-10-14 04:57:00,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:57:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-14 04:57:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 540. [2020-10-14 04:57:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-14 04:57:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 726 transitions. [2020-10-14 04:57:00,490 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 726 transitions. Word has length 52 [2020-10-14 04:57:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:00,491 INFO L479 AbstractCegarLoop]: Abstraction has 540 states and 726 transitions. [2020-10-14 04:57:00,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:57:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 726 transitions. [2020-10-14 04:57:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:00,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:00,492 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:00,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-14 04:57:00,493 INFO L427 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:00,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1310966787, now seen corresponding path program 13 times [2020-10-14 04:57:00,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:00,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244662192] [2020-10-14 04:57:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2169 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:03,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:03,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:03,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:03,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:03,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244662192] [2020-10-14 04:57:03,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:03,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:03,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913267893] [2020-10-14 04:57:03,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:03,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:03,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:03,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:03,470 INFO L87 Difference]: Start difference. First operand 540 states and 726 transitions. Second operand 17 states. [2020-10-14 04:57:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:04,967 INFO L93 Difference]: Finished difference Result 834 states and 1157 transitions. [2020-10-14 04:57:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:57:04,968 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:04,969 INFO L225 Difference]: With dead ends: 834 [2020-10-14 04:57:04,969 INFO L226 Difference]: Without dead ends: 706 [2020-10-14 04:57:04,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:57:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-14 04:57:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 630. [2020-10-14 04:57:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-14 04:57:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 861 transitions. [2020-10-14 04:57:05,006 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 861 transitions. Word has length 52 [2020-10-14 04:57:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:05,007 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 861 transitions. [2020-10-14 04:57:05,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 861 transitions. [2020-10-14 04:57:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:05,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:05,008 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:05,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-14 04:57:05,008 INFO L427 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1949598019, now seen corresponding path program 14 times [2020-10-14 04:57:05,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:05,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188644489] [2020-10-14 04:57:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3209 [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:57:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:08,668 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 7 [2020-10-14 04:57:08,859 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 7 [2020-10-14 04:57:09,016 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 7 [2020-10-14 04:57:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:09,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:09,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:09,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:57:09,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:09,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:57:09,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188644489] [2020-10-14 04:57:09,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:09,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:57:09,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506306827] [2020-10-14 04:57:09,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:57:09,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:09,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:57:09,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:57:09,119 INFO L87 Difference]: Start difference. First operand 630 states and 861 transitions. Second operand 12 states. [2020-10-14 04:57:09,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:09,677 INFO L93 Difference]: Finished difference Result 1268 states and 1783 transitions. [2020-10-14 04:57:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:57:09,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-14 04:57:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:09,680 INFO L225 Difference]: With dead ends: 1268 [2020-10-14 04:57:09,680 INFO L226 Difference]: Without dead ends: 1024 [2020-10-14 04:57:09,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:57:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-14 04:57:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 754. [2020-10-14 04:57:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2020-10-14 04:57:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1047 transitions. [2020-10-14 04:57:09,753 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1047 transitions. Word has length 52 [2020-10-14 04:57:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:09,754 INFO L479 AbstractCegarLoop]: Abstraction has 754 states and 1047 transitions. [2020-10-14 04:57:09,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:57:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1047 transitions. [2020-10-14 04:57:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:09,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:09,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:09,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-14 04:57:09,756 INFO L427 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1140249471, now seen corresponding path program 11 times [2020-10-14 04:57:09,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:09,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453824429] [2020-10-14 04:57:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:13,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:13,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:13,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3895 [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:14,472 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 30 [2020-10-14 04:57:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:14,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:14,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:14,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:14,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:14,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:14,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:14,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 04:57:14,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453824429] [2020-10-14 04:57:14,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:14,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:57:14,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329672509] [2020-10-14 04:57:14,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:57:14,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:14,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:57:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:57:14,560 INFO L87 Difference]: Start difference. First operand 754 states and 1047 transitions. Second operand 10 states. [2020-10-14 04:57:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:15,237 INFO L93 Difference]: Finished difference Result 810 states and 1105 transitions. [2020-10-14 04:57:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:57:15,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-14 04:57:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:15,241 INFO L225 Difference]: With dead ends: 810 [2020-10-14 04:57:15,241 INFO L226 Difference]: Without dead ends: 808 [2020-10-14 04:57:15,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-14 04:57:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 558. [2020-10-14 04:57:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-10-14 04:57:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 745 transitions. [2020-10-14 04:57:15,281 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 745 transitions. Word has length 52 [2020-10-14 04:57:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:15,281 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 745 transitions. [2020-10-14 04:57:15,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:57:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 745 transitions. [2020-10-14 04:57:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:15,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:15,282 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:15,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-14 04:57:15,282 INFO L427 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash 493316415, now seen corresponding path program 12 times [2020-10-14 04:57:15,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:15,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717333979] [2020-10-14 04:57:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:15,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:17,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:17,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:18,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:18,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:18,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:18,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:57:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:18,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717333979] [2020-10-14 04:57:18,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:18,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:18,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927335288] [2020-10-14 04:57:18,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:18,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:18,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:18,244 INFO L87 Difference]: Start difference. First operand 558 states and 745 transitions. Second operand 17 states. [2020-10-14 04:57:18,910 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-14 04:57:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:20,593 INFO L93 Difference]: Finished difference Result 628 states and 826 transitions. [2020-10-14 04:57:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:57:20,594 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:20,597 INFO L225 Difference]: With dead ends: 628 [2020-10-14 04:57:20,597 INFO L226 Difference]: Without dead ends: 626 [2020-10-14 04:57:20,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2020-10-14 04:57:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-14 04:57:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 402. [2020-10-14 04:57:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-14 04:57:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 517 transitions. [2020-10-14 04:57:20,651 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 517 transitions. Word has length 52 [2020-10-14 04:57:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:20,652 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 517 transitions. [2020-10-14 04:57:20,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 517 transitions. [2020-10-14 04:57:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:20,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:20,653 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:20,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-14 04:57:20,657 INFO L427 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash 147828202, now seen corresponding path program 12 times [2020-10-14 04:57:20,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:20,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075544886] [2020-10-14 04:57:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:21,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:21,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:21,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:21,947 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-14 04:57:22,122 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-14 04:57:22,318 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-14 04:57:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:22,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:22,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:22,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:22,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:22,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:22,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075544886] [2020-10-14 04:57:22,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:22,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:22,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986583010] [2020-10-14 04:57:22,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:22,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:22,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:22,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:22,771 INFO L87 Difference]: Start difference. First operand 402 states and 517 transitions. Second operand 17 states. [2020-10-14 04:57:23,787 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-14 04:57:24,464 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-10-14 04:57:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:25,340 INFO L93 Difference]: Finished difference Result 423 states and 542 transitions. [2020-10-14 04:57:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:57:25,341 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:25,343 INFO L225 Difference]: With dead ends: 423 [2020-10-14 04:57:25,343 INFO L226 Difference]: Without dead ends: 421 [2020-10-14 04:57:25,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:57:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-14 04:57:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 407. [2020-10-14 04:57:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-14 04:57:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 525 transitions. [2020-10-14 04:57:25,399 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 525 transitions. Word has length 52 [2020-10-14 04:57:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:25,399 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 525 transitions. [2020-10-14 04:57:25,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 525 transitions. [2020-10-14 04:57:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:25,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:25,401 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:25,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-14 04:57:25,402 INFO L427 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash 147830124, now seen corresponding path program 9 times [2020-10-14 04:57:25,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:25,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703501250] [2020-10-14 04:57:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:26,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:57:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-14 04:57:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:26,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:57:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:26,960 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-14 04:57:27,161 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-14 04:57:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:27,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:57:27,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:27,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:27,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703501250] [2020-10-14 04:57:27,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:27,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:27,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075986547] [2020-10-14 04:57:27,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:27,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:27,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:27,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:27,799 INFO L87 Difference]: Start difference. First operand 407 states and 525 transitions. Second operand 17 states. [2020-10-14 04:57:28,936 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 04:57:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:29,561 INFO L93 Difference]: Finished difference Result 499 states and 652 transitions. [2020-10-14 04:57:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:57:29,562 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:29,564 INFO L225 Difference]: With dead ends: 499 [2020-10-14 04:57:29,564 INFO L226 Difference]: Without dead ends: 438 [2020-10-14 04:57:29,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:57:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-14 04:57:29,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 408. [2020-10-14 04:57:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-14 04:57:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 525 transitions. [2020-10-14 04:57:29,609 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 525 transitions. Word has length 52 [2020-10-14 04:57:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:29,609 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 525 transitions. [2020-10-14 04:57:29,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 525 transitions. [2020-10-14 04:57:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:29,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:29,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:29,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-14 04:57:29,611 INFO L427 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:29,611 INFO L82 PathProgramCache]: Analyzing trace with hash 205086504, now seen corresponding path program 11 times [2020-10-14 04:57:29,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:29,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278994] [2020-10-14 04:57:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:29,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:30,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:30,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:30,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-14 04:57:30,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:30,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:57:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:30,893 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-14 04:57:31,103 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-14 04:57:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:31,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:31,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278994] [2020-10-14 04:57:31,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:31,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:31,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977037842] [2020-10-14 04:57:31,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:31,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:31,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:31,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:31,674 INFO L87 Difference]: Start difference. First operand 408 states and 525 transitions. Second operand 17 states. [2020-10-14 04:57:32,752 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-14 04:57:33,427 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-10-14 04:57:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:34,267 INFO L93 Difference]: Finished difference Result 439 states and 562 transitions. [2020-10-14 04:57:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:57:34,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:34,269 INFO L225 Difference]: With dead ends: 439 [2020-10-14 04:57:34,270 INFO L226 Difference]: Without dead ends: 437 [2020-10-14 04:57:34,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-14 04:57:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-14 04:57:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 402. [2020-10-14 04:57:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-14 04:57:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 518 transitions. [2020-10-14 04:57:34,325 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 518 transitions. Word has length 52 [2020-10-14 04:57:34,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:34,325 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 518 transitions. [2020-10-14 04:57:34,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 518 transitions. [2020-10-14 04:57:34,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:34,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:34,327 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:34,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-14 04:57:34,327 INFO L427 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash 405993640, now seen corresponding path program 12 times [2020-10-14 04:57:34,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:34,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197895996] [2020-10-14 04:57:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:35,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:57:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:35,665 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-14 04:57:35,860 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-10-14 04:57:36,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:36,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:36,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:36,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:36,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197895996] [2020-10-14 04:57:36,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:36,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:36,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485283375] [2020-10-14 04:57:36,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:36,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:36,502 INFO L87 Difference]: Start difference. First operand 402 states and 518 transitions. Second operand 17 states. [2020-10-14 04:57:37,521 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-14 04:57:38,199 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-10-14 04:57:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:39,062 INFO L93 Difference]: Finished difference Result 430 states and 551 transitions. [2020-10-14 04:57:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:57:39,063 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:39,064 INFO L225 Difference]: With dead ends: 430 [2020-10-14 04:57:39,064 INFO L226 Difference]: Without dead ends: 428 [2020-10-14 04:57:39,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:57:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-14 04:57:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 399. [2020-10-14 04:57:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-14 04:57:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 514 transitions. [2020-10-14 04:57:39,134 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 514 transitions. Word has length 52 [2020-10-14 04:57:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:39,134 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 514 transitions. [2020-10-14 04:57:39,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 514 transitions. [2020-10-14 04:57:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 04:57:39,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:39,135 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:39,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-14 04:57:39,135 INFO L427 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:39,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:39,135 INFO L82 PathProgramCache]: Analyzing trace with hash 463251942, now seen corresponding path program 13 times [2020-10-14 04:57:39,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:39,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740728237] [2020-10-14 04:57:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:57:40,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-14 04:57:40,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:40,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:57:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:57:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:40,372 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-10-14 04:57:40,693 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-14 04:57:40,885 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-14 04:57:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:41,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:41,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:41,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:41,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:41,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:41,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740728237] [2020-10-14 04:57:41,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:41,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:57:41,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662288475] [2020-10-14 04:57:41,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:57:41,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:41,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:57:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:57:41,533 INFO L87 Difference]: Start difference. First operand 399 states and 514 transitions. Second operand 17 states. [2020-10-14 04:57:42,493 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-14 04:57:43,183 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-14 04:57:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:44,088 INFO L93 Difference]: Finished difference Result 424 states and 542 transitions. [2020-10-14 04:57:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:57:44,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-14 04:57:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:44,090 INFO L225 Difference]: With dead ends: 424 [2020-10-14 04:57:44,090 INFO L226 Difference]: Without dead ends: 422 [2020-10-14 04:57:44,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2020-10-14 04:57:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-14 04:57:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 374. [2020-10-14 04:57:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-14 04:57:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 483 transitions. [2020-10-14 04:57:44,119 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 483 transitions. Word has length 52 [2020-10-14 04:57:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:44,119 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 483 transitions. [2020-10-14 04:57:44,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:57:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 483 transitions. [2020-10-14 04:57:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:57:44,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:44,120 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:44,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-14 04:57:44,120 INFO L427 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:44,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:44,120 INFO L82 PathProgramCache]: Analyzing trace with hash -453232412, now seen corresponding path program 9 times [2020-10-14 04:57:44,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:44,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273376909] [2020-10-14 04:57:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:44,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:57:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:57:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:57:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:57:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:57:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:57:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:57:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:57:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:57:45,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273376909] [2020-10-14 04:57:45,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:57:45,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:57:45,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818101944] [2020-10-14 04:57:45,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:57:45,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:57:45,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:57:45,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:57:45,610 INFO L87 Difference]: Start difference. First operand 374 states and 483 transitions. Second operand 16 states. [2020-10-14 04:57:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:57:47,578 INFO L93 Difference]: Finished difference Result 471 states and 614 transitions. [2020-10-14 04:57:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:57:47,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-14 04:57:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:57:47,580 INFO L225 Difference]: With dead ends: 471 [2020-10-14 04:57:47,580 INFO L226 Difference]: Without dead ends: 469 [2020-10-14 04:57:47,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:57:47,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-14 04:57:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 444. [2020-10-14 04:57:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-14 04:57:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 582 transitions. [2020-10-14 04:57:47,617 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 582 transitions. Word has length 54 [2020-10-14 04:57:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:57:47,617 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 582 transitions. [2020-10-14 04:57:47,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:57:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 582 transitions. [2020-10-14 04:57:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:57:47,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:57:47,618 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:57:47,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-14 04:57:47,618 INFO L427 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:57:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:57:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash -453230490, now seen corresponding path program 15 times [2020-10-14 04:57:47,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:57:47,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716458736] [2020-10-14 04:57:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:57:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat