/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 SingleStatement --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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:34:15,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:34:15,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:34:15,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:34:15,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:34:15,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:34:15,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:34:15,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:34:15,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:34:15,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:34:15,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:34:15,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:34:15,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:34:15,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:34:15,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:34:15,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:34:15,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:34:15,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:34:15,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:34:15,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:34:15,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:34:15,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:34:15,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:34:15,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:34:15,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:34:15,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:34:15,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:34:15,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:34:15,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:34:15,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:34:15,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:34:15,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:34:15,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:34:15,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:34:15,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:34:15,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:34:15,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:34:15,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:34:15,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:34:15,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:34:15,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:34:15,743 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 [2020-09-25 06:34:15,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:34:15,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:34:15,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:34:15,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:34:15,790 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:34:15,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:34:15,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:34:15,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:34:15,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:34:15,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:34:15,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:34:15,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:34:15,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:34:15,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:34:15,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:34:15,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:34:15,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:34:15,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:34:15,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:34:15,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:34:15,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:34:15,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:34:15,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:34:15,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:34:15,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:34:15,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:34:15,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:34:15,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:34:15,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:34:15,797 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 -> SingleStatement 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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=true; [2020-09-25 06:34:16,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:34:16,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:34:16,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:34:16,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:34:16,283 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:34:16,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 06:34:16,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c0b948a4/990cfb3203244ce1b67317b40dccde98/FLAG92957afe0 [2020-09-25 06:34:16,948 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:34:16,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 06:34:16,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c0b948a4/990cfb3203244ce1b67317b40dccde98/FLAG92957afe0 [2020-09-25 06:34:17,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c0b948a4/990cfb3203244ce1b67317b40dccde98 [2020-09-25 06:34:17,328 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:34:17,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:34:17,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:34:17,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:34:17,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:34:17,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24493d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17, skipping insertion in model container [2020-09-25 06:34:17,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:34:17,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:34:17,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:34:17,614 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:34:17,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:34:17,649 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:34:17,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17 WrapperNode [2020-09-25 06:34:17,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:34:17,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:34:17,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:34:17,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:34:17,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (1/1) ... [2020-09-25 06:34:17,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:34:17,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:34:17,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:34:17,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:34:17,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (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 [2020-09-25 06:34:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:34:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:34:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 06:34:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:34:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:34:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:34:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 06:34:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:34:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:34:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:34:18,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:34:18,105 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:34:18,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:34:18 BoogieIcfgContainer [2020-09-25 06:34:18,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:34:18,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:34:18,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:34:18,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:34:18,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:34:17" (1/3) ... [2020-09-25 06:34:18,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@977360b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:34:18, skipping insertion in model container [2020-09-25 06:34:18,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:17" (2/3) ... [2020-09-25 06:34:18,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@977360b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:34:18, skipping insertion in model container [2020-09-25 06:34:18,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:34:18" (3/3) ... [2020-09-25 06:34:18,122 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 06:34:18,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:34:18,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:34:18,176 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:34:18,211 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:34:18,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:34:18,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:34:18,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:34:18,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:34:18,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:34:18,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:34:18,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:34:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 06:34:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 06:34:18,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:18,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:18,250 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:18,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 06:34:18,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:18,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312968983] [2020-09-25 06:34:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 06:34:18,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 06:34:18,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:18,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:34:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:34:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:34:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:18,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:18,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:18,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:18,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:34:18,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:18,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:18,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:18,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 06:34:18,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:18,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:34:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:34:18,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312968983] [2020-09-25 06:34:18,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:34:18,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:34:18,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579707816] [2020-09-25 06:34:18,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:34:18,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:18,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:34:18,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:34:18,912 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 06:34:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:19,169 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 06:34:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:34:19,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 06:34:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:19,186 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:34:19,186 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 06:34:19,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:34:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 06:34:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 06:34:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 06:34:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 06:34:19,244 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 06:34:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:19,245 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 06:34:19,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:34:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 06:34:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 06:34:19,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:19,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:19,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:34:19,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 06:34:19,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:19,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443310865] [2020-09-25 06:34:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:19,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:34:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 06:34:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:19,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:34:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:34:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:19,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:19,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:19,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:34:19,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:19,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:19,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:34:19,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:19,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:34:19,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443310865] [2020-09-25 06:34:19,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:34:19,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:34:19,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437194640] [2020-09-25 06:34:19,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:34:19,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:19,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:34:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:34:19,492 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 06:34:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:19,673 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 06:34:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:34:19,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 06:34:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:19,675 INFO L225 Difference]: With dead ends: 39 [2020-09-25 06:34:19,675 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 06:34:19,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:34:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 06:34:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 06:34:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 06:34:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 06:34:19,695 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 06:34:19,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:19,695 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 06:34:19,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:34:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 06:34:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 06:34:19,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:19,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:19,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:34:19,701 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 06:34:19,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:19,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766877106] [2020-09-25 06:34:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:20,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:34:20,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-25 06:34:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:20,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:34:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:34:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:34:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:20,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:20,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:20,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:34:20,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:20,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 06:34:20,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:20,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 06:34:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:20,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:20,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:20,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:20,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:20,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:34:20,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:20,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:34:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:20,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:20,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:20,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:20,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:34:20,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:20,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 06:34:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:34:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:34:20,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766877106] [2020-09-25 06:34:20,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:20,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:34:20,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429397179] [2020-09-25 06:34:20,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:34:20,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:20,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:34:20,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:34:20,506 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-09-25 06:34:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:20,611 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-25 06:34:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:34:20,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 06:34:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:20,615 INFO L225 Difference]: With dead ends: 55 [2020-09-25 06:34:20,615 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 06:34:20,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:34:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 06:34:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 06:34:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 06:34:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-25 06:34:20,633 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2020-09-25 06:34:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:20,634 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-25 06:34:20,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:34:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-25 06:34:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 06:34:20,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:20,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:20,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:34:20,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 06:34:20,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:20,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736870482] [2020-09-25 06:34:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 06:34:21,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-09-25 06:34:21,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:34:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:34:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:34:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:21,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:21,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:34:21,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 06:34:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:34:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:34:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:21,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:34:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:21,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:21,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:21,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:34:21,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:21,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:34:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:34:22,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736870482] [2020-09-25 06:34:22,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:22,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:34:22,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852087476] [2020-09-25 06:34:22,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:34:22,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:34:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:34:22,030 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2020-09-25 06:34:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:22,382 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-09-25 06:34:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:34:22,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 06:34:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:22,386 INFO L225 Difference]: With dead ends: 51 [2020-09-25 06:34:22,386 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 06:34:22,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:34:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 06:34:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-25 06:34:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 06:34:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-09-25 06:34:22,397 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 37 [2020-09-25 06:34:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:22,398 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-09-25 06:34:22,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:34:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-09-25 06:34:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:34:22,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:22,401 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:22,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:34:22,401 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 06:34:22,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:22,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377159233] [2020-09-25 06:34:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 06:34:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:34:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:34:27,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:27,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:34:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:34:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:34:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:27,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:27,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:27,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:27,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:27,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:29,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:34:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:34:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2253 [2020-09-25 06:34:29,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:29,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:34:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:34:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:34:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:29,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:34:29,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:34:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:34:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:34:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:34:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-09-25 06:34:30,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:30,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:34:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:30,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:30,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:30,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:30,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:30,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:30,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:34:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:30,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:34:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:34:30,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:30,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:34:30,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377159233] [2020-09-25 06:34:30,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:30,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:34:30,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006730416] [2020-09-25 06:34:30,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:34:30,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:30,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:34:30,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:34:30,484 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2020-09-25 06:34:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:30,685 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2020-09-25 06:34:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:34:30,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-09-25 06:34:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:30,689 INFO L225 Difference]: With dead ends: 75 [2020-09-25 06:34:30,689 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 06:34:30,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:34:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 06:34:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 06:34:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 06:34:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-09-25 06:34:30,710 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 56 [2020-09-25 06:34:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:30,710 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-09-25 06:34:30,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:34:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-09-25 06:34:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 06:34:30,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:30,716 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:30,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:34:30,716 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 2 times [2020-09-25 06:34:30,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:30,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154876251] [2020-09-25 06:34:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:30,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 06:34:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:34:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:34:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:35,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:35,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:34:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:34:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 06:34:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:35,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:35,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:35,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:35,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:34:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:34:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4222 [2020-09-25 06:34:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:40,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:34:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:34:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:34:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:34:40,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:40,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:34:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:34:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:40,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:40,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:34:40,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:40,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:34:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:40,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:40,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:34:40,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:40,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:34:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:40,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:34:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:40,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:34:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:40,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:34:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 06:34:40,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154876251] [2020-09-25 06:34:40,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:40,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:34:40,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525536810] [2020-09-25 06:34:40,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:34:40,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:40,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:34:40,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:34:40,376 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 13 states. [2020-09-25 06:34:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:40,782 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-09-25 06:34:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:34:40,783 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-25 06:34:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:40,787 INFO L225 Difference]: With dead ends: 61 [2020-09-25 06:34:40,788 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 06:34:40,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:34:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 06:34:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-09-25 06:34:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 06:34:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-09-25 06:34:40,804 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 55 [2020-09-25 06:34:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:40,806 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-09-25 06:34:40,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:34:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-09-25 06:34:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 06:34:40,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:40,816 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:40,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:34:40,818 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash -778718797, now seen corresponding path program 3 times [2020-09-25 06:34:40,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:40,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821597638] [2020-09-25 06:34:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:40,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:45,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:45,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 06:34:45,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:34:45,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:34:45,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:45,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:45,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:34:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:34:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:45,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:45,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:45,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:50,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 06:34:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 06:34:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:34:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:50,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:34:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 06:34:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:34:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 06:34:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:34:51,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:34:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:34:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:51,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:34:51,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:51,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:51,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:34:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:34:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:34:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:53,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:34:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:34:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:34:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:34:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:53,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:34:53,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:34:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:34:53,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:34:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:34:53,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:34:53,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:53,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 79 proven. 67 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-25 06:34:53,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821597638] [2020-09-25 06:34:53,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:53,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:34:53,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199623670] [2020-09-25 06:34:53,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:34:53,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:53,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:34:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:34:53,940 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 10 states. [2020-09-25 06:34:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:54,118 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2020-09-25 06:34:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:34:54,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-09-25 06:34:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:54,121 INFO L225 Difference]: With dead ends: 100 [2020-09-25 06:34:54,121 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 06:34:54,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:34:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 06:34:54,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 06:34:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 06:34:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-09-25 06:34:54,132 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 90 [2020-09-25 06:34:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:54,133 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-09-25 06:34:54,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:34:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-09-25 06:34:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 06:34:54,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:54,135 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:54,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:34:54,136 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:54,136 INFO L82 PathProgramCache]: Analyzing trace with hash 237402259, now seen corresponding path program 4 times [2020-09-25 06:34:54,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:54,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603020976] [2020-09-25 06:34:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:59,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:34:59,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:34:59,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:34:59,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:59,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:34:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:34:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:34:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:34:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:59,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:34:59,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:34:59,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:59,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:59,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:04,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 06:35:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:35:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:35:04,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:04,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:35:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:35:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:35:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:04,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:05,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:35:05,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1439 [2020-09-25 06:35:05,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:05,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:35:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 06:35:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:05,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:35:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:35:05,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:05,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:05,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:05,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:05,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:05,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:35:05,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:05,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:35:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:05,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:05,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:35:05,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:05,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:35:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking...