/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/array-industry-pattern/array_of_struct_break.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:56:08,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:56:08,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:56:08,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:56:08,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:56:08,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:56:08,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:56:08,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:56:08,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:56:08,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:56:08,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:56:08,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:56:08,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:56:08,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:56:08,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:56:08,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:56:08,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:56:08,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:56:08,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:56:08,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:56:08,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:56:08,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:56:08,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:56:08,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:56:08,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:56:08,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:56:08,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:56:08,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:56:08,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:56:08,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:56:08,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:56:08,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:56:08,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:56:08,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:56:08,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:56:08,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:56:08,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:56:08,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:56:08,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:56:08,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:56:08,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:56:08,766 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 [2020-10-13 23:56:08,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:56:08,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:56:08,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:56:08,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:56:08,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:56:08,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:56:08,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:56:08,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:56:08,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:56:08,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:56:08,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:56:08,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:56:08,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:56:08,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:56:08,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:56:08,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:56:08,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:56:08,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:56:08,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:56:08,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:56:08,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:56:08,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:56:08,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:56:08,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:56:08,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:56:08,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:56:08,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:56:08,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:56:08,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:56:08,813 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; [2020-10-13 23:56:09,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:56:09,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:56:09,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:56:09,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:56:09,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:56:09,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i [2020-10-13 23:56:09,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1259a1720/806d2528aa834bb7a5afaea8b7d995cd/FLAGa52868307 [2020-10-13 23:56:09,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:56:09,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_break.i [2020-10-13 23:56:09,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1259a1720/806d2528aa834bb7a5afaea8b7d995cd/FLAGa52868307 [2020-10-13 23:56:10,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1259a1720/806d2528aa834bb7a5afaea8b7d995cd [2020-10-13 23:56:10,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:56:10,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:56:10,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:56:10,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:56:10,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:56:10,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:56:10" (1/1) ... [2020-10-13 23:56:10,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9d6996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:10, skipping insertion in model container [2020-10-13 23:56:10,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:56:10" (1/1) ... [2020-10-13 23:56:10,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:56:10,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:56:10,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:56:12,011 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:56:12,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:56:12,060 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:56:12,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12 WrapperNode [2020-10-13 23:56:12,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:56:12,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:56:12,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:56:12,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:56:12,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (1/1) ... [2020-10-13 23:56:12,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:56:12,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:56:12,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:56:12,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:56:12,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (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 [2020-10-13 23:56:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:56:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:56:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:56:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:56:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:56:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:56:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:56:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:56:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:56:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:56:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:56:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:56:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:56:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:56:12,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:56:12,509 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 23:56:12,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:56:12 BoogieIcfgContainer [2020-10-13 23:56:12,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:56:12,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:56:12,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:56:12,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:56:12,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:56:10" (1/3) ... [2020-10-13 23:56:12,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dc1fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:56:12, skipping insertion in model container [2020-10-13 23:56:12,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:56:12" (2/3) ... [2020-10-13 23:56:12,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dc1fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:56:12, skipping insertion in model container [2020-10-13 23:56:12,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:56:12" (3/3) ... [2020-10-13 23:56:12,523 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_break.i [2020-10-13 23:56:12,534 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:56:12,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:56:12,556 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:56:12,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:56:12,582 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:56:12,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:56:12,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:56:12,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:56:12,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:56:12,583 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:56:12,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:56:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-13 23:56:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 23:56:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:12,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:12,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:12,622 INFO L82 PathProgramCache]: Analyzing trace with hash 547567586, now seen corresponding path program 1 times [2020-10-13 23:56:12,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:12,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883013849] [2020-10-13 23:56:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:56:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 23:56:12,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:12,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:56:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:56:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:12,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:12,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:12,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:56:12,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:12,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:12,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883013849] [2020-10-13 23:56:12,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:12,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:56:12,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375048344] [2020-10-13 23:56:12,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:56:12,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:13,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:56:13,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:56:13,004 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-13 23:56:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:13,130 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2020-10-13 23:56:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:56:13,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-13 23:56:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:13,142 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:56:13,143 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:56:13,147 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 [2020-10-13 23:56:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:56:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-10-13 23:56:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 23:56:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-13 23:56:13,190 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2020-10-13 23:56:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:13,191 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-13 23:56:13,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:56:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-13 23:56:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 23:56:13,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:13,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:13,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:56:13,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:13,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1443476915, now seen corresponding path program 1 times [2020-10-13 23:56:13,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:13,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005287508] [2020-10-13 23:56:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:13,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:13,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:56:13,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 23:56:13,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:13,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:56:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:56:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:56:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:13,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:13,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005287508] [2020-10-13 23:56:13,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:13,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:56:13,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148431415] [2020-10-13 23:56:13,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:56:13,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:56:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:56:13,387 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2020-10-13 23:56:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:13,555 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-13 23:56:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:56:13,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 23:56:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:13,557 INFO L225 Difference]: With dead ends: 52 [2020-10-13 23:56:13,557 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:56:13,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:56:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:56:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2020-10-13 23:56:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 23:56:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-13 23:56:13,567 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2020-10-13 23:56:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:13,567 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-13 23:56:13,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:56:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-13 23:56:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:56:13,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:13,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:13,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:56:13,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:13,570 INFO L82 PathProgramCache]: Analyzing trace with hash -796107231, now seen corresponding path program 1 times [2020-10-13 23:56:13,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:13,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856707194] [2020-10-13 23:56:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:13,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:56:13,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 23:56:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:13,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:56:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:56:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:56:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:13,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:13,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:13,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:13,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:56:13,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:13,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:13,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:13,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 78 [2020-10-13 23:56:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:13,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856707194] [2020-10-13 23:56:13,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:56:13,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:56:13,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516690855] [2020-10-13 23:56:13,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:56:13,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:13,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:56:13,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:56:13,856 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2020-10-13 23:56:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:13,988 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-10-13 23:56:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:56:13,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:56:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:13,990 INFO L225 Difference]: With dead ends: 42 [2020-10-13 23:56:13,990 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 23:56:13,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:56:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 23:56:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-13 23:56:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 23:56:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-13 23:56:13,997 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-10-13 23:56:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:13,997 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-13 23:56:13,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:56:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-13 23:56:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 23:56:13,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:13,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:13,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:56:13,999 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:13,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2000433480, now seen corresponding path program 1 times [2020-10-13 23:56:13,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:14,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897755918] [2020-10-13 23:56:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:14,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:14,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 23:56:14,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-13 23:56:14,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:14,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:56:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:14,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 23:56:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:14,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:14,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:14,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:56:14,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:14,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:14,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:14,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897755918] [2020-10-13 23:56:14,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:14,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:56:14,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571020783] [2020-10-13 23:56:14,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:56:14,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:14,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:56:14,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:56:14,359 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-10-13 23:56:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:14,477 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-13 23:56:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:56:14,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-13 23:56:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:14,479 INFO L225 Difference]: With dead ends: 49 [2020-10-13 23:56:14,479 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 23:56:14,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:56:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 23:56:14,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2020-10-13 23:56:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:56:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-13 23:56:14,487 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17 [2020-10-13 23:56:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:14,487 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-13 23:56:14,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:56:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-13 23:56:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 23:56:14,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:14,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:14,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:56:14,489 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:14,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1356244077, now seen corresponding path program 2 times [2020-10-13 23:56:14,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:14,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864782754] [2020-10-13 23:56:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:14,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:14,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:56:14,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-13 23:56:14,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:14,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:56:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:56:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:14,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:14,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:14,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:14,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:56:14,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:14,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:14,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864782754] [2020-10-13 23:56:14,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:14,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:56:14,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033086056] [2020-10-13 23:56:14,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:56:14,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:14,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:56:14,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:56:14,897 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-10-13 23:56:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:15,083 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 23:56:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:56:15,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-13 23:56:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:15,086 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:56:15,087 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 23:56:15,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:56:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 23:56:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2020-10-13 23:56:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:56:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-13 23:56:15,098 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2020-10-13 23:56:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:15,099 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-13 23:56:15,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:56:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-13 23:56:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 23:56:15,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:15,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:15,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:56:15,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:15,102 INFO L82 PathProgramCache]: Analyzing trace with hash 223617832, now seen corresponding path program 3 times [2020-10-13 23:56:15,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:15,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218579799] [2020-10-13 23:56:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:56:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-13 23:56:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:15,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:56:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:56:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:15,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:15,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:15,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:15,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:56:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:15,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218579799] [2020-10-13 23:56:15,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:15,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:56:15,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551076705] [2020-10-13 23:56:15,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:56:15,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:15,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:56:15,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:56:15,622 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-10-13 23:56:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:15,952 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-10-13 23:56:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:56:15,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-13 23:56:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:15,954 INFO L225 Difference]: With dead ends: 65 [2020-10-13 23:56:15,955 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 23:56:15,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:56:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 23:56:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2020-10-13 23:56:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:56:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-13 23:56:15,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2020-10-13 23:56:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:15,962 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-13 23:56:15,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:56:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-13 23:56:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:56:15,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:15,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:15,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:56:15,963 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash -581769587, now seen corresponding path program 4 times [2020-10-13 23:56:15,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:15,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908444154] [2020-10-13 23:56:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:56:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-13 23:56:16,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:56:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:56:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:16,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:16,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:16,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908444154] [2020-10-13 23:56:16,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:16,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:56:16,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705153027] [2020-10-13 23:56:16,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:56:16,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:16,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:56:16,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:56:16,427 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-10-13 23:56:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:16,684 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-10-13 23:56:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:56:16,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-13 23:56:16,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:16,686 INFO L225 Difference]: With dead ends: 73 [2020-10-13 23:56:16,686 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 23:56:16,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:56:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 23:56:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 34. [2020-10-13 23:56:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 23:56:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-13 23:56:16,694 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 26 [2020-10-13 23:56:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:16,695 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-13 23:56:16,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:56:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-13 23:56:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 23:56:16,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:16,697 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:16,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:56:16,697 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2103913736, now seen corresponding path program 5 times [2020-10-13 23:56:16,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:16,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590772870] [2020-10-13 23:56:16,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:17,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:17,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 23:56:17,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-13 23:56:17,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:17,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:56:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 23:56:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:17,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:17,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:17,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:17,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:56:17,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:17,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:17,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590772870] [2020-10-13 23:56:17,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:17,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:56:17,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197167829] [2020-10-13 23:56:17,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:56:17,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:17,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:56:17,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:56:17,369 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 9 states. [2020-10-13 23:56:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:17,578 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-10-13 23:56:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:56:17,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-13 23:56:17,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:17,580 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:56:17,580 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 23:56:17,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:56:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 23:56:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2020-10-13 23:56:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:56:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-13 23:56:17,588 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 29 [2020-10-13 23:56:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:17,588 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-13 23:56:17,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:56:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-13 23:56:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:56:17,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:17,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:17,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:56:17,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash 350032045, now seen corresponding path program 6 times [2020-10-13 23:56:17,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:17,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886268250] [2020-10-13 23:56:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-13 23:56:18,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:18,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:56:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:56:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:18,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:18,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:18,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886268250] [2020-10-13 23:56:18,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:18,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:56:18,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686076542] [2020-10-13 23:56:18,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:56:18,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:18,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:56:18,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:56:18,765 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 10 states. [2020-10-13 23:56:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:19,132 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2020-10-13 23:56:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:56:19,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-13 23:56:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:19,134 INFO L225 Difference]: With dead ends: 89 [2020-10-13 23:56:19,135 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 23:56:19,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:56:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 23:56:19,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 40. [2020-10-13 23:56:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 23:56:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-10-13 23:56:19,142 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 32 [2020-10-13 23:56:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:19,142 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-10-13 23:56:19,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:56:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-10-13 23:56:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 23:56:19,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:19,144 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:19,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:56:19,145 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1262268696, now seen corresponding path program 7 times [2020-10-13 23:56:19,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:19,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731398767] [2020-10-13 23:56:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:20,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 23:56:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-13 23:56:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:20,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:56:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 23:56:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:20,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:20,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:56:20,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731398767] [2020-10-13 23:56:20,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:20,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:56:20,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236092796] [2020-10-13 23:56:20,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:56:20,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:20,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:56:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:56:20,165 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 11 states. [2020-10-13 23:56:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:20,420 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-13 23:56:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:56:20,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-13 23:56:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:20,422 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:56:20,422 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 23:56:20,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:56:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 23:56:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 43. [2020-10-13 23:56:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:56:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-13 23:56:20,430 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 35 [2020-10-13 23:56:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:20,430 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-13 23:56:20,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:56:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-13 23:56:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 23:56:20,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:20,432 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:20,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:56:20,432 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1600594637, now seen corresponding path program 8 times [2020-10-13 23:56:20,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:20,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182900062] [2020-10-13 23:56:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:21,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:21,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 23:56:21,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:56:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-13 23:56:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:21,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:56:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:56:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:21,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:21,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 23:56:21,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182900062] [2020-10-13 23:56:21,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:21,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:56:21,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744613645] [2020-10-13 23:56:21,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:56:21,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:21,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:56:21,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:56:21,710 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 9 states. [2020-10-13 23:56:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:21,985 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-10-13 23:56:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:56:21,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-13 23:56:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:21,987 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:56:21,987 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:56:21,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:56:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:56:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-13 23:56:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 23:56:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-13 23:56:21,994 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 38 [2020-10-13 23:56:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:21,994 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-13 23:56:21,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:56:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-13 23:56:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 23:56:21,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:21,996 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:21,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:56:21,996 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1142743628, now seen corresponding path program 1 times [2020-10-13 23:56:21,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:21,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606421787] [2020-10-13 23:56:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:24,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 23:56:24,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:56:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2441 [2020-10-13 23:56:24,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:24,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:56:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:56:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:24,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:24,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:24,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:56:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:24,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:56:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 2 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 23:56:24,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606421787] [2020-10-13 23:56:24,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:24,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:56:24,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556108122] [2020-10-13 23:56:24,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:56:24,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:56:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:56:24,580 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-10-13 23:56:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:24,801 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-13 23:56:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:56:24,802 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-13 23:56:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:24,803 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:56:24,803 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 23:56:24,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:56:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 23:56:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 53. [2020-10-13 23:56:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:56:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-13 23:56:24,813 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 47 [2020-10-13 23:56:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:24,813 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-13 23:56:24,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:56:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-13 23:56:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 23:56:24,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:24,815 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:24,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:56:24,815 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:24,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1808860849, now seen corresponding path program 2 times [2020-10-13 23:56:24,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:24,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692927238] [2020-10-13 23:56:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:25,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:28,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:28,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 23:56:28,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:56:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3190 [2020-10-13 23:56:28,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:28,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:56:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 23:56:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:28,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:28,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:28,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 23:56:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:28,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:28,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:56:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:28,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 23:56:28,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692927238] [2020-10-13 23:56:28,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:28,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:56:28,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543442337] [2020-10-13 23:56:28,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:56:28,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:28,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:56:28,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:56:28,188 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-10-13 23:56:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:28,463 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-10-13 23:56:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:56:28,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-13 23:56:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:28,465 INFO L225 Difference]: With dead ends: 124 [2020-10-13 23:56:28,465 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 23:56:28,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:56:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 23:56:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 56. [2020-10-13 23:56:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 23:56:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-10-13 23:56:28,482 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50 [2020-10-13 23:56:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:28,484 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-10-13 23:56:28,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:56:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-10-13 23:56:28,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:56:28,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:28,490 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:28,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:56:28,490 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:28,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:28,491 INFO L82 PathProgramCache]: Analyzing trace with hash -936883156, now seen corresponding path program 3 times [2020-10-13 23:56:28,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:28,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18488148] [2020-10-13 23:56:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:56:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:56:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2915 [2020-10-13 23:56:31,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:31,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:56:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:56:31,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:31,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:31,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:31,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:56:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:31,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:56:31,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:31,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 23:56:31,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18488148] [2020-10-13 23:56:31,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:31,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:56:31,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216700722] [2020-10-13 23:56:31,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:56:31,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:31,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:56:31,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:56:31,600 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 14 states. [2020-10-13 23:56:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:31,907 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-10-13 23:56:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:56:31,908 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-13 23:56:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:31,909 INFO L225 Difference]: With dead ends: 132 [2020-10-13 23:56:31,909 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 23:56:31,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:56:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 23:56:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 59. [2020-10-13 23:56:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:56:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-13 23:56:31,919 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 53 [2020-10-13 23:56:31,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:31,919 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-13 23:56:31,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:56:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-13 23:56:31,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 23:56:31,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:31,921 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:31,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:56:31,921 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:31,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1744383791, now seen corresponding path program 4 times [2020-10-13 23:56:31,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:31,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544655108] [2020-10-13 23:56:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:36,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 23:56:36,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:56:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:56:36,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:36,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:56:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 23:56:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:37,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:37,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:37,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:56:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:37,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:37,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:37,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:37,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:56:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:56:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 23:56:37,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544655108] [2020-10-13 23:56:37,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:37,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:56:37,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119697395] [2020-10-13 23:56:37,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:56:37,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:37,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:56:37,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:56:37,251 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 11 states. [2020-10-13 23:56:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:37,666 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2020-10-13 23:56:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:56:37,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-13 23:56:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:37,667 INFO L225 Difference]: With dead ends: 72 [2020-10-13 23:56:37,668 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:56:37,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:56:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:56:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-13 23:56:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 23:56:37,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-13 23:56:37,676 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 56 [2020-10-13 23:56:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:37,677 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-13 23:56:37,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:56:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-13 23:56:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 23:56:37,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:37,678 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:37,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:56:37,679 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:37,679 INFO L82 PathProgramCache]: Analyzing trace with hash 174504136, now seen corresponding path program 5 times [2020-10-13 23:56:37,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:37,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544620750] [2020-10-13 23:56:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:42,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:42,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 23:56:42,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:56:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:56:42,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:42,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:42,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:56:42,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:42,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:56:42,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:42,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:42,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:42,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:42,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:42,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:42,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:42,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:56:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:56:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:42,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:56:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:42,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:42,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:56:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:42,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 4 proven. 176 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:56:42,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544620750] [2020-10-13 23:56:42,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:42,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:56:42,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623090769] [2020-10-13 23:56:42,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:56:42,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:42,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:56:42,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:56:42,863 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2020-10-13 23:56:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:43,198 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-13 23:56:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:56:43,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-13 23:56:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:43,200 INFO L225 Difference]: With dead ends: 153 [2020-10-13 23:56:43,200 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 23:56:43,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:56:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 23:56:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 71. [2020-10-13 23:56:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:56:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-13 23:56:43,212 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2020-10-13 23:56:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:43,213 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-13 23:56:43,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:56:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-13 23:56:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:56:43,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:43,214 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:43,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:56:43,214 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1192390125, now seen corresponding path program 6 times [2020-10-13 23:56:43,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:43,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254989949] [2020-10-13 23:56:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:48,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:56:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:56:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:56:48,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:48,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:56:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:56:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:56:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:48,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:48,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:48,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:56:48,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:48,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:48,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:56:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:48,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:56:48,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:48,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:56:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:56:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:56:48,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254989949] [2020-10-13 23:56:48,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:48,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:56:48,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708926181] [2020-10-13 23:56:48,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:56:48,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:56:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:56:48,424 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 16 states. [2020-10-13 23:56:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:48,762 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2020-10-13 23:56:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:56:48,764 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-13 23:56:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:48,765 INFO L225 Difference]: With dead ends: 161 [2020-10-13 23:56:48,765 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 23:56:48,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:56:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 23:56:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 74. [2020-10-13 23:56:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 23:56:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-10-13 23:56:48,774 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 68 [2020-10-13 23:56:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:48,775 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-10-13 23:56:48,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:56:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-10-13 23:56:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 23:56:48,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:48,776 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:48,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:56:48,776 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:48,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1730188632, now seen corresponding path program 7 times [2020-10-13 23:56:48,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:48,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076374538] [2020-10-13 23:56:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:48,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:53,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:53,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:56:53,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:56:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:56:53,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:53,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:56:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:56:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:56:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:56:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:56:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:54,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:56:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:56:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:56:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:54,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:54,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:56:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:54,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:56:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:56:54,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:56:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:54,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:56:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:56:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:56:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:54,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:56:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:56:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:56:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:56:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 4 proven. 103 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-13 23:56:54,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076374538] [2020-10-13 23:56:54,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:56:54,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:56:54,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500053840] [2020-10-13 23:56:54,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:56:54,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:56:54,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:56:54,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:56:54,190 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 13 states. [2020-10-13 23:56:54,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:56:54,829 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-10-13 23:56:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:56:54,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-13 23:56:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:56:54,830 INFO L225 Difference]: With dead ends: 87 [2020-10-13 23:56:54,830 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 23:56:54,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:56:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 23:56:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-13 23:56:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:56:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-10-13 23:56:54,845 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 71 [2020-10-13 23:56:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:56:54,845 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-10-13 23:56:54,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:56:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-10-13 23:56:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 23:56:54,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:56:54,852 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:56:54,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:56:54,853 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:56:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:56:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1965539119, now seen corresponding path program 8 times [2020-10-13 23:56:54,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:56:54,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668048667] [2020-10-13 23:56:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:56:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:56:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:56:59,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:56:59,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:56:59,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:56:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:56:59,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:56:59,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:56:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:56:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:56:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:56:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:00,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:00,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:00,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:00,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:00,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:57:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:00,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:00,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:00,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:00,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:57:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:00,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:57:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:00,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:00,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:00,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:00,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:00,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:00,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 6 proven. 247 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:00,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668048667] [2020-10-13 23:57:00,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:00,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:57:00,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831312130] [2020-10-13 23:57:00,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:57:00,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:00,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:57:00,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:57:00,097 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 17 states. [2020-10-13 23:57:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:00,563 INFO L93 Difference]: Finished difference Result 182 states and 195 transitions. [2020-10-13 23:57:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:57:00,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-13 23:57:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:00,565 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:57:00,565 INFO L226 Difference]: Without dead ends: 145 [2020-10-13 23:57:00,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:57:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-13 23:57:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 86. [2020-10-13 23:57:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:57:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-10-13 23:57:00,590 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2020-10-13 23:57:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:00,590 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-10-13 23:57:00,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:57:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-10-13 23:57:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 23:57:00,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:00,592 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:00,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:57:00,593 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1094648564, now seen corresponding path program 9 times [2020-10-13 23:57:00,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:00,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427281264] [2020-10-13 23:57:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:02,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:05,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:05,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 23:57:05,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:57:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:57:05,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:05,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:57:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:57:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:05,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:05,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:05,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:05,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:57:05,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:05,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:05,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:05,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:57:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:05,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:05,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:05,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:57:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:05,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:05,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:05,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:05,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:57:05,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:05,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:05,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:05,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:57:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:05,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:05,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:05,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:57:05,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:05,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 6 proven. 287 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:05,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427281264] [2020-10-13 23:57:05,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:05,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:57:05,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163445711] [2020-10-13 23:57:05,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:57:05,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:05,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:57:05,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:57:05,878 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 18 states. [2020-10-13 23:57:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:06,392 INFO L93 Difference]: Finished difference Result 190 states and 204 transitions. [2020-10-13 23:57:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:57:06,393 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-10-13 23:57:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:06,395 INFO L225 Difference]: With dead ends: 190 [2020-10-13 23:57:06,395 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:57:06,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:57:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:57:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 89. [2020-10-13 23:57:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:57:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-10-13 23:57:06,412 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 83 [2020-10-13 23:57:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:06,413 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-10-13 23:57:06,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:57:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-10-13 23:57:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:57:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:06,415 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:06,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:57:06,415 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2003407601, now seen corresponding path program 10 times [2020-10-13 23:57:06,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:06,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612834703] [2020-10-13 23:57:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:11,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:11,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:57:11,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:57:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:11,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:11,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:11,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:11,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:57:11,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:11,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:57:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:11,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:11,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:11,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:11,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:57:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:11,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:11,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:11,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:11,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:11,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:57:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:11,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:11,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:11,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 6 proven. 330 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:11,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612834703] [2020-10-13 23:57:11,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:11,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:57:11,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552402347] [2020-10-13 23:57:11,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:57:11,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:57:11,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:57:11,716 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 19 states. [2020-10-13 23:57:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:12,158 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2020-10-13 23:57:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:57:12,159 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-10-13 23:57:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:12,160 INFO L225 Difference]: With dead ends: 198 [2020-10-13 23:57:12,160 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 23:57:12,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:57:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 23:57:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 92. [2020-10-13 23:57:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 23:57:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2020-10-13 23:57:12,174 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 86 [2020-10-13 23:57:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:12,174 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2020-10-13 23:57:12,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:57:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2020-10-13 23:57:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 23:57:12,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:12,176 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:12,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:57:12,176 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:12,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1642395372, now seen corresponding path program 11 times [2020-10-13 23:57:12,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:12,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440928704] [2020-10-13 23:57:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:57:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:57:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:17,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:17,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:57:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:17,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:17,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:17,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:17,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:17,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:57:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:17,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:17,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:17,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:57:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:17,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:17,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 6 proven. 376 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:17,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440928704] [2020-10-13 23:57:17,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:17,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:57:17,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423142094] [2020-10-13 23:57:17,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:57:17,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:57:17,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:57:17,434 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 20 states. [2020-10-13 23:57:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:17,852 INFO L93 Difference]: Finished difference Result 206 states and 222 transitions. [2020-10-13 23:57:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:57:17,854 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 89 [2020-10-13 23:57:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:17,856 INFO L225 Difference]: With dead ends: 206 [2020-10-13 23:57:17,856 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 23:57:17,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:57:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 23:57:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 95. [2020-10-13 23:57:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:57:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-13 23:57:17,875 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 89 [2020-10-13 23:57:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:17,875 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-13 23:57:17,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:57:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-13 23:57:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 23:57:17,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:17,877 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:17,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:57:17,877 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:17,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:17,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1325190417, now seen corresponding path program 12 times [2020-10-13 23:57:17,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:17,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450052853] [2020-10-13 23:57:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:22,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:22,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:57:22,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:57:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:57:22,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:22,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:57:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 23:57:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:23,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:23,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:57:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:57:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:23,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:23,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:23,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:23,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:23,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:23,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:57:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:23,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:23,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 6 proven. 425 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:23,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450052853] [2020-10-13 23:57:23,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:23,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:57:23,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543381932] [2020-10-13 23:57:23,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:57:23,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:23,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:57:23,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:57:23,165 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 21 states. [2020-10-13 23:57:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:23,614 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2020-10-13 23:57:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:57:23,614 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2020-10-13 23:57:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:23,616 INFO L225 Difference]: With dead ends: 214 [2020-10-13 23:57:23,616 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 23:57:23,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:57:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 23:57:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 98. [2020-10-13 23:57:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 23:57:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-10-13 23:57:23,628 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 92 [2020-10-13 23:57:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:23,628 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-10-13 23:57:23,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:57:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-10-13 23:57:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 23:57:23,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:23,630 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:23,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:57:23,630 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash 400427212, now seen corresponding path program 13 times [2020-10-13 23:57:23,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:23,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129720697] [2020-10-13 23:57:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:57:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:57:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:28,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:28,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:28,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:28,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:28,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:28,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:57:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:28,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:28,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:57:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:28,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:57:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:28,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:28,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:28,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 477 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:28,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129720697] [2020-10-13 23:57:28,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:28,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:57:28,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442072860] [2020-10-13 23:57:28,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:57:28,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:57:28,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:57:28,925 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 22 states. [2020-10-13 23:57:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:29,450 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2020-10-13 23:57:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:57:29,451 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2020-10-13 23:57:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:29,453 INFO L225 Difference]: With dead ends: 222 [2020-10-13 23:57:29,454 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 23:57:29,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:57:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 23:57:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 101. [2020-10-13 23:57:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:57:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-10-13 23:57:29,464 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 95 [2020-10-13 23:57:29,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:29,464 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-10-13 23:57:29,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:57:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-10-13 23:57:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:57:29,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:29,466 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:29,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:57:29,466 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1299976399, now seen corresponding path program 14 times [2020-10-13 23:57:29,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:29,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500244717] [2020-10-13 23:57:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 23:57:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:57:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:57:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:34,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:57:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:57:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:34,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:34,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:34,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:34,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:34,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:34,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:57:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:34,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:34,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:57:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:34,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:34,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:57:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:57:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:34,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:34,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:34,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 6 proven. 532 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:34,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500244717] [2020-10-13 23:57:34,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:34,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:57:34,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222711697] [2020-10-13 23:57:34,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:57:34,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:34,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:57:34,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:57:34,798 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 23 states. [2020-10-13 23:57:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:35,362 INFO L93 Difference]: Finished difference Result 230 states and 249 transitions. [2020-10-13 23:57:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:57:35,363 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 98 [2020-10-13 23:57:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:35,365 INFO L225 Difference]: With dead ends: 230 [2020-10-13 23:57:35,365 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 23:57:35,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:57:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 23:57:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 104. [2020-10-13 23:57:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-13 23:57:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2020-10-13 23:57:35,377 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 98 [2020-10-13 23:57:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:35,377 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2020-10-13 23:57:35,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:57:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2020-10-13 23:57:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 23:57:35,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:35,378 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:35,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:57:35,379 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1115304620, now seen corresponding path program 15 times [2020-10-13 23:57:35,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:35,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336126134] [2020-10-13 23:57:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:35,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:36,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:57:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:40,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:40,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:40,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:40,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:57:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:40,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:40,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:40,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:40,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:57:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:40,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:40,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:40,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:40,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:40,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 23:57:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:40,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:40,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 6 proven. 590 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:57:40,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336126134] [2020-10-13 23:57:40,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:40,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:57:40,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443186800] [2020-10-13 23:57:40,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:57:40,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:40,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:57:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:57:40,760 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 24 states. [2020-10-13 23:57:41,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:41,259 INFO L93 Difference]: Finished difference Result 238 states and 258 transitions. [2020-10-13 23:57:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:57:41,260 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 101 [2020-10-13 23:57:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:41,262 INFO L225 Difference]: With dead ends: 238 [2020-10-13 23:57:41,263 INFO L226 Difference]: Without dead ends: 201 [2020-10-13 23:57:41,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:57:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-13 23:57:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 107. [2020-10-13 23:57:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:57:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-10-13 23:57:41,275 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 101 [2020-10-13 23:57:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:41,275 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-10-13 23:57:41,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:57:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-10-13 23:57:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:57:41,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:41,277 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:41,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:57:41,277 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1165031761, now seen corresponding path program 16 times [2020-10-13 23:57:41,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:41,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120670950] [2020-10-13 23:57:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:46,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:46,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:57:46,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:57:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:57:46,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:46,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:57:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 23:57:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:46,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:46,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:46,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:46,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:46,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:57:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:46,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:46,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:46,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:46,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:57:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:57:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:57:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:46,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:46,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:46,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:57:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:57:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:57:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:46,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:46,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:46,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:46,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:57:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:57:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 6 proven. 233 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2020-10-13 23:57:46,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120670950] [2020-10-13 23:57:46,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:46,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:57:46,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978114751] [2020-10-13 23:57:46,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:57:46,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:57:46,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:57:46,734 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 15 states. [2020-10-13 23:57:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:47,473 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2020-10-13 23:57:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:57:47,474 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-10-13 23:57:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:47,475 INFO L225 Difference]: With dead ends: 120 [2020-10-13 23:57:47,475 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 23:57:47,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:57:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 23:57:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-13 23:57:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-13 23:57:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2020-10-13 23:57:47,490 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 104 [2020-10-13 23:57:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:47,490 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2020-10-13 23:57:47,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:57:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2020-10-13 23:57:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 23:57:47,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:47,491 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:47,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:57:47,492 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1923227720, now seen corresponding path program 17 times [2020-10-13 23:57:47,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:47,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795051591] [2020-10-13 23:57:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:47,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 23:57:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:52,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:52,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:57:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:52,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:52,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:52,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:57:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:52,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:52,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:57:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:52,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:52,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:57:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:52,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:52,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:52,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:52,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 8 proven. 651 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:57:52,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795051591] [2020-10-13 23:57:52,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:52,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:57:52,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125416389] [2020-10-13 23:57:52,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:57:52,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:52,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:57:52,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:57:52,930 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 25 states. [2020-10-13 23:57:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:53,534 INFO L93 Difference]: Finished difference Result 259 states and 279 transitions. [2020-10-13 23:57:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:57:53,535 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 113 [2020-10-13 23:57:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:53,536 INFO L225 Difference]: With dead ends: 259 [2020-10-13 23:57:53,536 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 23:57:53,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:57:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 23:57:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 119. [2020-10-13 23:57:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 23:57:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-10-13 23:57:53,552 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 113 [2020-10-13 23:57:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:53,553 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-10-13 23:57:53,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:57:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-10-13 23:57:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 23:57:53,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:53,554 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:53,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:57:53,554 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash -971827347, now seen corresponding path program 18 times [2020-10-13 23:57:53,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:53,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478105642] [2020-10-13 23:57:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:53,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:57:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:57:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:58,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:57:58,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:57:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:58,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:58,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:58,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:57:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:57:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:57:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:57:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:57:58,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:57:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:57:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:57:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:57:58,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:57:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:57:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:57:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:57:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:57:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 8 proven. 715 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:57:58,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478105642] [2020-10-13 23:57:58,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:57:58,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:57:58,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644297604] [2020-10-13 23:57:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:57:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:57:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:57:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:57:58,958 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 26 states. [2020-10-13 23:57:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:57:59,499 INFO L93 Difference]: Finished difference Result 267 states and 288 transitions. [2020-10-13 23:57:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:57:59,499 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 116 [2020-10-13 23:57:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:57:59,501 INFO L225 Difference]: With dead ends: 267 [2020-10-13 23:57:59,501 INFO L226 Difference]: Without dead ends: 221 [2020-10-13 23:57:59,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:57:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-13 23:57:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 122. [2020-10-13 23:57:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 23:57:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-10-13 23:57:59,517 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 116 [2020-10-13 23:57:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:57:59,517 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-10-13 23:57:59,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:57:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-10-13 23:57:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 23:57:59,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:57:59,518 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:57:59,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:57:59,518 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:57:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:57:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash -319057368, now seen corresponding path program 19 times [2020-10-13 23:57:59,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:57:59,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534566710] [2020-10-13 23:57:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:57:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:57:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:03,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 23:58:04,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:58:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 23:58:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:04,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:58:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:58:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:04,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:04,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:04,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:04,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:58:04,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:04,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:58:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:04,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:04,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:04,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 23:58:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:04,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:58:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:04,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:04,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:04,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:04,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 23:58:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:04,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:04,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:04,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 8 proven. 782 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:58:04,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534566710] [2020-10-13 23:58:04,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:04,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:58:04,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545382407] [2020-10-13 23:58:04,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:58:04,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:04,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:58:04,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:58:04,977 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 27 states. [2020-10-13 23:58:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:05,620 INFO L93 Difference]: Finished difference Result 275 states and 297 transitions. [2020-10-13 23:58:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:58:05,620 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 119 [2020-10-13 23:58:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:05,623 INFO L225 Difference]: With dead ends: 275 [2020-10-13 23:58:05,623 INFO L226 Difference]: Without dead ends: 229 [2020-10-13 23:58:05,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:58:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-13 23:58:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 125. [2020-10-13 23:58:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 23:58:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2020-10-13 23:58:05,645 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 119 [2020-10-13 23:58:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:05,646 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2020-10-13 23:58:05,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:58:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2020-10-13 23:58:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:58:05,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:05,647 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:05,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:58:05,648 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1260529267, now seen corresponding path program 20 times [2020-10-13 23:58:05,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:05,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900230795] [2020-10-13 23:58:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:08,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:10,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:58:10,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:11,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:11,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:11,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:58:11,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:11,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:11,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:58:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:11,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:11,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:11,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:11,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:58:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:58:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:11,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:11,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:11,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:58:11,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:11,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:58:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:11,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:58:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:11,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:11,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:11,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:11,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:11,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 8 proven. 852 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:58:11,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900230795] [2020-10-13 23:58:11,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:11,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:58:11,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474931124] [2020-10-13 23:58:11,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:58:11,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:58:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:58:11,146 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 28 states. [2020-10-13 23:58:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:11,880 INFO L93 Difference]: Finished difference Result 283 states and 306 transitions. [2020-10-13 23:58:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:58:11,881 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 122 [2020-10-13 23:58:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:11,883 INFO L225 Difference]: With dead ends: 283 [2020-10-13 23:58:11,883 INFO L226 Difference]: Without dead ends: 237 [2020-10-13 23:58:11,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:58:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-13 23:58:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 128. [2020-10-13 23:58:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 23:58:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2020-10-13 23:58:11,899 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 122 [2020-10-13 23:58:11,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:11,900 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2020-10-13 23:58:11,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:58:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2020-10-13 23:58:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 23:58:11,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:11,901 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:11,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:58:11,901 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:11,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1781537800, now seen corresponding path program 21 times [2020-10-13 23:58:11,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:11,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657530623] [2020-10-13 23:58:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:11,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:16,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:16,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 23:58:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:17,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:17,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:58:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:17,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:17,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:17,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:17,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:17,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:17,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:58:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:58:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:17,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:17,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:17,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:17,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:17,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:58:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:17,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:17,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:17,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:17,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 8 proven. 925 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:58:17,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657530623] [2020-10-13 23:58:17,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:17,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:58:17,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865355317] [2020-10-13 23:58:17,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:58:17,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:17,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:58:17,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:58:17,386 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 29 states. [2020-10-13 23:58:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:18,264 INFO L93 Difference]: Finished difference Result 291 states and 315 transitions. [2020-10-13 23:58:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:58:18,265 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 125 [2020-10-13 23:58:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:18,267 INFO L225 Difference]: With dead ends: 291 [2020-10-13 23:58:18,268 INFO L226 Difference]: Without dead ends: 245 [2020-10-13 23:58:18,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:58:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-13 23:58:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 131. [2020-10-13 23:58:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 23:58:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-10-13 23:58:18,320 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125 [2020-10-13 23:58:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:18,320 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-10-13 23:58:18,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:58:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-10-13 23:58:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:58:18,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:18,324 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:18,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:58:18,325 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:18,325 INFO L82 PathProgramCache]: Analyzing trace with hash -103382099, now seen corresponding path program 22 times [2020-10-13 23:58:18,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:18,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690323266] [2020-10-13 23:58:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 23:58:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 23:58:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:23,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:23,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:23,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:23,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 23:58:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:23,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:23,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:23,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:23,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:58:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:23,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:23,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:23,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:23,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 23:58:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:23,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:23,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:58:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:23,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:23,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:23,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:23,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:23,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:23,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:23,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 8 proven. 1001 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:58:23,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690323266] [2020-10-13 23:58:23,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:23,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:58:23,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599413787] [2020-10-13 23:58:23,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:58:23,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:23,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:58:23,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:58:23,905 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 30 states. [2020-10-13 23:58:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:24,813 INFO L93 Difference]: Finished difference Result 299 states and 324 transitions. [2020-10-13 23:58:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:58:24,814 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 128 [2020-10-13 23:58:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:24,816 INFO L225 Difference]: With dead ends: 299 [2020-10-13 23:58:24,816 INFO L226 Difference]: Without dead ends: 253 [2020-10-13 23:58:24,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:58:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-13 23:58:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 134. [2020-10-13 23:58:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 23:58:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-10-13 23:58:24,853 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 128 [2020-10-13 23:58:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:24,853 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-10-13 23:58:24,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:58:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-10-13 23:58:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 23:58:24,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:24,857 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:24,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:58:24,857 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:24,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1349665304, now seen corresponding path program 23 times [2020-10-13 23:58:24,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:24,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023378525] [2020-10-13 23:58:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 23:58:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:58:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:58:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:29,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:58:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 23:58:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:58:30,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:30,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:58:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:30,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:30,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:58:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:30,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:30,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:30,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:30,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:30,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:58:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:30,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:30,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:30,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:30,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:30,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:58:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:30,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:30,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:30,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:30,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:30,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 8 proven. 1080 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:58:30,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023378525] [2020-10-13 23:58:30,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:30,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:58:30,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068622608] [2020-10-13 23:58:30,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:58:30,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:30,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:58:30,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:58:30,587 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 31 states. [2020-10-13 23:58:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:31,595 INFO L93 Difference]: Finished difference Result 307 states and 333 transitions. [2020-10-13 23:58:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 23:58:31,596 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 131 [2020-10-13 23:58:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:31,598 INFO L225 Difference]: With dead ends: 307 [2020-10-13 23:58:31,598 INFO L226 Difference]: Without dead ends: 261 [2020-10-13 23:58:31,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:58:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-13 23:58:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 137. [2020-10-13 23:58:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 23:58:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2020-10-13 23:58:31,625 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 131 [2020-10-13 23:58:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:31,625 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2020-10-13 23:58:31,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:58:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2020-10-13 23:58:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:58:31,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:31,627 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:31,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:58:31,628 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:31,628 INFO L82 PathProgramCache]: Analyzing trace with hash 619648461, now seen corresponding path program 24 times [2020-10-13 23:58:31,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:31,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250836633] [2020-10-13 23:58:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:35,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:36,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:36,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:36,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 23:58:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:37,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:37,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:37,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:37,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:58:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:37,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:37,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:37,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:37,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:37,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:58:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:58:37,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:58:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:58:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:58:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:58:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:58:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:58:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:58:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:58:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:37,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:58:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 8 proven. 399 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2020-10-13 23:58:37,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250836633] [2020-10-13 23:58:37,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:37,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:58:37,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160803892] [2020-10-13 23:58:37,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:58:37,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:37,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:58:37,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:58:37,483 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 17 states. [2020-10-13 23:58:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:38,399 INFO L93 Difference]: Finished difference Result 150 states and 151 transitions. [2020-10-13 23:58:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:58:38,399 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2020-10-13 23:58:38,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:38,400 INFO L225 Difference]: With dead ends: 150 [2020-10-13 23:58:38,400 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 23:58:38,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:58:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 23:58:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-10-13 23:58:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 23:58:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-10-13 23:58:38,420 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 134 [2020-10-13 23:58:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:38,420 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-10-13 23:58:38,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:58:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-10-13 23:58:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 23:58:38,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:38,422 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:38,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:58:38,422 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:38,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2094419788, now seen corresponding path program 25 times [2020-10-13 23:58:38,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:38,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58982995] [2020-10-13 23:58:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:40,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:43,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 23:58:43,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:44,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:44,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:58:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:44,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:58:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:44,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:44,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:44,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:44,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:44,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:58:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:44,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:44,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:58:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:44,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:44,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:44,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:44,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:44,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:58:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:44,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:44,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:44,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:44,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:58:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:58:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:44,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:44,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:58:44,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:44,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 10 proven. 1162 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:58:44,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58982995] [2020-10-13 23:58:44,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:44,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:58:44,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839130533] [2020-10-13 23:58:44,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:58:44,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:44,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:58:44,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:58:44,213 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 32 states. [2020-10-13 23:58:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:45,114 INFO L93 Difference]: Finished difference Result 328 states and 354 transitions. [2020-10-13 23:58:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 23:58:45,115 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 143 [2020-10-13 23:58:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:45,117 INFO L225 Difference]: With dead ends: 328 [2020-10-13 23:58:45,117 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 23:58:45,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:58:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 23:58:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 149. [2020-10-13 23:58:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 23:58:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2020-10-13 23:58:45,145 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 143 [2020-10-13 23:58:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:45,145 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2020-10-13 23:58:45,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:58:45,145 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2020-10-13 23:58:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:58:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:45,146 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:45,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:58:45,146 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash -886966351, now seen corresponding path program 26 times [2020-10-13 23:58:45,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:45,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758750842] [2020-10-13 23:58:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 23:58:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 23:58:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:50,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:50,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:58:50,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:58:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:50,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:50,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:50,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 23:58:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:58:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:50,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 23:58:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:58:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 10 proven. 1247 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:58:50,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758750842] [2020-10-13 23:58:50,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:50,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 23:58:50,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396952544] [2020-10-13 23:58:50,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 23:58:50,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:50,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 23:58:50,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:58:50,772 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 33 states. [2020-10-13 23:58:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:51,643 INFO L93 Difference]: Finished difference Result 336 states and 363 transitions. [2020-10-13 23:58:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 23:58:51,644 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-13 23:58:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:51,646 INFO L225 Difference]: With dead ends: 336 [2020-10-13 23:58:51,646 INFO L226 Difference]: Without dead ends: 281 [2020-10-13 23:58:51,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:58:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-13 23:58:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 152. [2020-10-13 23:58:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 23:58:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2020-10-13 23:58:51,679 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 146 [2020-10-13 23:58:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:51,679 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2020-10-13 23:58:51,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 23:58:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2020-10-13 23:58:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 23:58:51,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:51,681 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:51,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:58:51,682 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash 562247980, now seen corresponding path program 27 times [2020-10-13 23:58:51,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:51,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786729970] [2020-10-13 23:58:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:58:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 23:58:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:58:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:57,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:57,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:58:57,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:58:57,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:57,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:58:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:58:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:57,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:57,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:58:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:58:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:57,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:58:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:58:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:58:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:58:57,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:58:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:58:57,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:58:57,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:58:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:58:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:58:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:58:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:58:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 10 proven. 1335 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:58:57,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786729970] [2020-10-13 23:58:57,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:58:57,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-13 23:58:57,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614690802] [2020-10-13 23:58:57,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-13 23:58:57,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:58:57,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-13 23:58:57,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:58:57,355 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand 34 states. [2020-10-13 23:58:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:58:58,393 INFO L93 Difference]: Finished difference Result 344 states and 372 transitions. [2020-10-13 23:58:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 23:58:58,393 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 149 [2020-10-13 23:58:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:58:58,396 INFO L225 Difference]: With dead ends: 344 [2020-10-13 23:58:58,396 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 23:58:58,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:58:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 23:58:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 155. [2020-10-13 23:58:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-13 23:58:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-10-13 23:58:58,430 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 149 [2020-10-13 23:58:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:58:58,431 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-10-13 23:58:58,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-13 23:58:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-10-13 23:58:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:58:58,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:58:58,432 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:58:58,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:58:58,432 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:58:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:58:58,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1095123409, now seen corresponding path program 28 times [2020-10-13 23:58:58,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:58:58,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66387203] [2020-10-13 23:58:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:58:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:58:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:58:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:03,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 23:59:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:04,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:04,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:04,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:04,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:59:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:59:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:04,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:04,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:04,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:59:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:04,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:04,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:04,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:04,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:04,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:59:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:59:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 10 proven. 1426 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:04,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66387203] [2020-10-13 23:59:04,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:04,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 23:59:04,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808323160] [2020-10-13 23:59:04,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 23:59:04,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:04,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 23:59:04,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:59:04,144 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 35 states. [2020-10-13 23:59:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:05,061 INFO L93 Difference]: Finished difference Result 352 states and 381 transitions. [2020-10-13 23:59:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 23:59:05,061 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 152 [2020-10-13 23:59:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:05,064 INFO L225 Difference]: With dead ends: 352 [2020-10-13 23:59:05,064 INFO L226 Difference]: Without dead ends: 297 [2020-10-13 23:59:05,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:59:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-13 23:59:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 158. [2020-10-13 23:59:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 23:59:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-10-13 23:59:05,090 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 152 [2020-10-13 23:59:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:05,091 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-10-13 23:59:05,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 23:59:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-10-13 23:59:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 23:59:05,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:05,092 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:05,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:59:05,093 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1787902732, now seen corresponding path program 29 times [2020-10-13 23:59:05,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:05,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689367579] [2020-10-13 23:59:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 23:59:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:59:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-13 23:59:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:59:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 23:59:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:10,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 23:59:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:59:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:10,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 23:59:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:10,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:10,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:59:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 23:59:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:10,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:10,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:10,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:10,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:10,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 10 proven. 1520 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:10,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689367579] [2020-10-13 23:59:10,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:10,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:59:10,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756874800] [2020-10-13 23:59:10,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:59:10,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:10,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:59:10,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:59:10,883 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 36 states. [2020-10-13 23:59:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:12,009 INFO L93 Difference]: Finished difference Result 360 states and 390 transitions. [2020-10-13 23:59:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:59:12,009 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 155 [2020-10-13 23:59:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:12,011 INFO L225 Difference]: With dead ends: 360 [2020-10-13 23:59:12,011 INFO L226 Difference]: Without dead ends: 305 [2020-10-13 23:59:12,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:59:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-13 23:59:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 161. [2020-10-13 23:59:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 23:59:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2020-10-13 23:59:12,038 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 155 [2020-10-13 23:59:12,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:12,039 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2020-10-13 23:59:12,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-13 23:59:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2020-10-13 23:59:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 23:59:12,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:12,040 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:12,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:59:12,040 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1236110351, now seen corresponding path program 30 times [2020-10-13 23:59:12,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:12,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501496920] [2020-10-13 23:59:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:59:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 23:59:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:17,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:17,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:17,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:59:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:59:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:17,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:17,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:59:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:59:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:17,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:17,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 23:59:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:17,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 10 proven. 1617 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:17,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501496920] [2020-10-13 23:59:17,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:17,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 23:59:17,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927374959] [2020-10-13 23:59:17,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 23:59:17,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:17,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 23:59:17,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:59:17,794 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 37 states. [2020-10-13 23:59:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:19,104 INFO L93 Difference]: Finished difference Result 368 states and 399 transitions. [2020-10-13 23:59:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 23:59:19,104 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 158 [2020-10-13 23:59:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:19,106 INFO L225 Difference]: With dead ends: 368 [2020-10-13 23:59:19,106 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 23:59:19,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=669, Invalid=737, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:59:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 23:59:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 164. [2020-10-13 23:59:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 23:59:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2020-10-13 23:59:19,136 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 158 [2020-10-13 23:59:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:19,136 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2020-10-13 23:59:19,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-13 23:59:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2020-10-13 23:59:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 23:59:19,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:19,138 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:19,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:59:19,138 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:19,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1624134892, now seen corresponding path program 31 times [2020-10-13 23:59:19,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:19,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929766216] [2020-10-13 23:59:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 23:59:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 23:59:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:59:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:24,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:59:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:59:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:24,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:59:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:24,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-13 23:59:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:24,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:24,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 10 proven. 1717 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:24,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929766216] [2020-10-13 23:59:24,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:24,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 23:59:24,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787659937] [2020-10-13 23:59:24,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 23:59:24,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:24,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 23:59:24,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:59:24,895 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand 38 states. [2020-10-13 23:59:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:25,897 INFO L93 Difference]: Finished difference Result 376 states and 408 transitions. [2020-10-13 23:59:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 23:59:25,897 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 161 [2020-10-13 23:59:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:25,900 INFO L225 Difference]: With dead ends: 376 [2020-10-13 23:59:25,900 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 23:59:25,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=706, Invalid=776, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:59:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 23:59:25,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 167. [2020-10-13 23:59:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-13 23:59:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-10-13 23:59:25,927 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 161 [2020-10-13 23:59:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:25,928 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-10-13 23:59:25,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 23:59:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-10-13 23:59:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:59:25,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:25,929 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:25,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:59:25,929 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:25,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:25,930 INFO L82 PathProgramCache]: Analyzing trace with hash -960983535, now seen corresponding path program 32 times [2020-10-13 23:59:25,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:25,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241070903] [2020-10-13 23:59:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:31,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 23:59:31,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:59:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5761 [2020-10-13 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:59:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 23:59:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:32,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:59:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 23:59:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:32,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:32,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-13 23:59:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 10 proven. 1820 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:32,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241070903] [2020-10-13 23:59:32,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:32,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 23:59:32,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524359629] [2020-10-13 23:59:32,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 23:59:32,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:32,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 23:59:32,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:59:32,560 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 39 states. [2020-10-13 23:59:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:33,869 INFO L93 Difference]: Finished difference Result 384 states and 417 transitions. [2020-10-13 23:59:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 23:59:33,869 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-10-13 23:59:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:33,871 INFO L225 Difference]: With dead ends: 384 [2020-10-13 23:59:33,871 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 23:59:33,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=744, Invalid=816, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:59:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 23:59:33,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 170. [2020-10-13 23:59:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 23:59:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-10-13 23:59:33,899 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 164 [2020-10-13 23:59:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:33,899 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-10-13 23:59:33,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 23:59:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-10-13 23:59:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 23:59:33,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:33,901 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:33,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:59:33,901 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:33,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1165457716, now seen corresponding path program 33 times [2020-10-13 23:59:33,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:33,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694301149] [2020-10-13 23:59:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:33,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:39,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5799 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 23:59:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:40,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:59:40,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:59:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:40,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:40,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:40,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:59:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:40,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:59:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 23:59:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 23:59:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:40,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 10 proven. 1926 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:40,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694301149] [2020-10-13 23:59:40,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:40,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-13 23:59:40,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914326698] [2020-10-13 23:59:40,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-13 23:59:40,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:40,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-13 23:59:40,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:59:40,601 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 40 states. [2020-10-13 23:59:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:41,747 INFO L93 Difference]: Finished difference Result 392 states and 426 transitions. [2020-10-13 23:59:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 23:59:41,748 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 167 [2020-10-13 23:59:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:41,749 INFO L225 Difference]: With dead ends: 392 [2020-10-13 23:59:41,749 INFO L226 Difference]: Without dead ends: 337 [2020-10-13 23:59:41,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=783, Invalid=857, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:59:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-13 23:59:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 173. [2020-10-13 23:59:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-13 23:59:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2020-10-13 23:59:41,782 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 167 [2020-10-13 23:59:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:41,782 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2020-10-13 23:59:41,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-13 23:59:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2020-10-13 23:59:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 23:59:41,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:41,784 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:41,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:59:41,784 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1902809137, now seen corresponding path program 34 times [2020-10-13 23:59:41,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:41,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718161899] [2020-10-13 23:59:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 23:59:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:47,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:59:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:47,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:59:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:59:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:47,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-13 23:59:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:47,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 23:59:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:59:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 10 proven. 2035 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:59:47,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718161899] [2020-10-13 23:59:47,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:47,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-13 23:59:47,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039598198] [2020-10-13 23:59:47,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-13 23:59:47,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:47,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-13 23:59:47,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:59:47,711 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 41 states. [2020-10-13 23:59:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:48,995 INFO L93 Difference]: Finished difference Result 400 states and 435 transitions. [2020-10-13 23:59:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 23:59:48,996 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 170 [2020-10-13 23:59:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:48,998 INFO L225 Difference]: With dead ends: 400 [2020-10-13 23:59:48,998 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 23:59:48,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=823, Invalid=899, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:59:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 23:59:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 176. [2020-10-13 23:59:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 23:59:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2020-10-13 23:59:49,029 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 170 [2020-10-13 23:59:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:49,029 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2020-10-13 23:59:49,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-13 23:59:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2020-10-13 23:59:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 23:59:49,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:49,031 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:49,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:59:49,031 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1148333908, now seen corresponding path program 35 times [2020-10-13 23:59:49,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:49,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620917606] [2020-10-13 23:59:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking...