/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=0.4 --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-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:26:38,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:26:38,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:26:38,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:26:38,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:26:38,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:26:38,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:26:38,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:26:38,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:26:38,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:26:38,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:26:38,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:26:38,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:26:38,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:26:38,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:26:38,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:26:38,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:26:38,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:26:38,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:26:38,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:26:38,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:26:38,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:26:38,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:26:38,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:26:38,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:26:38,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:26:38,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:26:38,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:26:38,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:26:38,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:26:38,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:26:38,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:26:38,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:26:38,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:26:38,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:26:38,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:26:38,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:26:38,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:26:38,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:26:38,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:26:38,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:26:38,770 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 05:26:38,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:26:38,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:26:38,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:26:38,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:26:38,826 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:26:38,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:26:38,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:26:38,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:26:38,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:26:38,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:26:38,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:26:38,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:26:38,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:26:38,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:26:38,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:26:38,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:26:38,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:26:38,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:26:38,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:26:38,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:26:38,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:26:38,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:26:38,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:26:38,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:26:38,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:26:38,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:26:38,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:26:38,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:26:38,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:26:38,833 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:26:39,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:26:39,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:26:39,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:26:39,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:26:39,431 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:26:39,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 05:26:39,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96c15ab24/2c702b9132e94eeca438a7fb2e5418c2/FLAG5cdd6ff87 [2020-09-25 05:26:40,064 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:26:40,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 05:26:40,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96c15ab24/2c702b9132e94eeca438a7fb2e5418c2/FLAG5cdd6ff87 [2020-09-25 05:26:40,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96c15ab24/2c702b9132e94eeca438a7fb2e5418c2 [2020-09-25 05:26:40,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:26:40,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:26:40,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:26:40,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:26:40,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:26:40,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff870af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40, skipping insertion in model container [2020-09-25 05:26:40,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:26:40,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:26:40,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:26:40,672 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:26:40,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:26:40,711 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:26:40,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40 WrapperNode [2020-09-25 05:26:40,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:26:40,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:26:40,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:26:40,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:26:40,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (1/1) ... [2020-09-25 05:26:40,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:26:40,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:26:40,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:26:40,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:26:40,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (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 05:26:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:26:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:26:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 05:26:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 05:26:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:26:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:26:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:26:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 05:26:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 05:26:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:26:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:26:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:26:41,145 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:26:41,145 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:26:41,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:26:41 BoogieIcfgContainer [2020-09-25 05:26:41,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:26:41,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:26:41,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:26:41,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:26:41,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:26:40" (1/3) ... [2020-09-25 05:26:41,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bacf904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:26:41, skipping insertion in model container [2020-09-25 05:26:41,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:40" (2/3) ... [2020-09-25 05:26:41,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bacf904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:26:41, skipping insertion in model container [2020-09-25 05:26:41,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:26:41" (3/3) ... [2020-09-25 05:26:41,163 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-25 05:26:41,178 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:26:41,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:26:41,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:26:41,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:26:41,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:26:41,288 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:26:41,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:26:41,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:26:41,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:26:41,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:26:41,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:26:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 05:26:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:26:41,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:41,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:41,322 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 05:26:41,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:41,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160986235] [2020-09-25 05:26:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:41,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:41,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:26:41,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 05:26:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:41,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:26:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:26:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:41,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:26:41,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:41,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:41,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:26:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:26:41,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:41,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:26:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:26:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:41,834 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 05:26:41,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160986235] [2020-09-25 05:26:41,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:26:41,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:26:41,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047403520] [2020-09-25 05:26:41,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:26:41,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:41,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:26:41,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:26:41,872 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 05:26:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:41,963 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 05:26:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:26:41,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:26:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:41,979 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:26:41,980 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 05:26:41,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:26:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 05:26:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 05:26:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:26:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:26:42,045 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 05:26:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:42,046 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:26:42,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:26:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:26:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:26:42,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:42,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:42,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:26:42,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:42,050 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 05:26:42,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:42,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159113289] [2020-09-25 05:26:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:42,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:26:42,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 05:26:42,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:42,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:42,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:42,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:26:42,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:42,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:42,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:42,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:26:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:42,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:42,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:26:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:42,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:42,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:26:42,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:42,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:26:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:26:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:42,354 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 05:26:42,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159113289] [2020-09-25 05:26:42,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:26:42,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:26:42,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990850178] [2020-09-25 05:26:42,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:26:42,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:42,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:26:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:26:42,358 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 05:26:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:42,428 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 05:26:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:26:42,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 05:26:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:42,431 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:26:42,431 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:26:42,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:26:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:26:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 05:26:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:26:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:26:42,443 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 05:26:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:42,444 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:26:42,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:26:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:26:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:26:42,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:42,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:42,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:26:42,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:42,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 05:26:42,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:42,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415046190] [2020-09-25 05:26:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:44,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:26:44,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:26:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2081 [2020-09-25 05:26:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:44,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:26:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:26:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:44,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:26:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:26:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:44,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:26:44,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:26:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 05:26:44,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:44,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:26:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:26:44,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:26:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:44,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:44,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:44,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:26:44,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:44,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:26:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:44,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:26:44,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:26:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:26:44,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415046190] [2020-09-25 05:26:44,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:26:44,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:26:44,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632491610] [2020-09-25 05:26:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:26:44,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:44,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:26:44,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:26:44,880 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 05:26:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:44,994 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 05:26:44,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:26:44,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:26:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:44,997 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:26:44,998 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 05:26:44,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:26:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 05:26:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 05:26:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:26:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 05:26:45,010 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 05:26:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:45,010 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 05:26:45,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:26:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 05:26:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:26:45,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:45,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:45,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:26:45,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:45,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 05:26:45,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:45,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143343818] [2020-09-25 05:26:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:45,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:46,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:46,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:26:46,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:26:46,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-09-25 05:26:46,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:46,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:26:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:26:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:26:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:46,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:46,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:46,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:46,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:46,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:46,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:26:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:47,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:47,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:26:47,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:26:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-25 05:26:47,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:47,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:26:47,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:47,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:26:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:47,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:47,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:47,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:26:47,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:47,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:26:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:26:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:47,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:47,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:26:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:47,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:26:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:26:47,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143343818] [2020-09-25 05:26:47,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:47,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:26:47,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889237731] [2020-09-25 05:26:47,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:26:47,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:47,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:26:47,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:26:47,600 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 05:26:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:47,719 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-09-25 05:26:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:26:47,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 05:26:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:47,722 INFO L225 Difference]: With dead ends: 76 [2020-09-25 05:26:47,722 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 05:26:47,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:26:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 05:26:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-25 05:26:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:26:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 05:26:47,735 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 05:26:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:47,736 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 05:26:47,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:26:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 05:26:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:26:47,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:47,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:47,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:26:47,739 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 05:26:47,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:47,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553234111] [2020-09-25 05:26:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:52,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:26:52,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:26:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:26:52,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:52,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:26:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:26:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:52,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:52,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:52,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:52,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:52,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:52,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:26:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:52,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:26:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 05:26:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:53,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:26:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:26:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:26:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:26:53,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:26:53,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:53,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:26:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:26:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:53,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:26:53,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 05:26:53,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:53,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:26:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:26:53,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:26:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:26:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:53,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:26:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:53,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:26:53,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:53,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:26:53,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553234111] [2020-09-25 05:26:53,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:53,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:26:53,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125077433] [2020-09-25 05:26:53,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:26:53,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:53,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:26:53,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:26:53,318 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 6 states. [2020-09-25 05:26:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:53,428 INFO L93 Difference]: Finished difference Result 108 states and 147 transitions. [2020-09-25 05:26:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:26:53,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 05:26:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:53,430 INFO L225 Difference]: With dead ends: 108 [2020-09-25 05:26:53,430 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:26:53,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:26:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:26:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 05:26:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:26:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 05:26:53,442 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 05:26:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:53,442 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 05:26:53,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:26:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 05:26:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:26:53,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:53,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:53,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:26:53,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 2 times [2020-09-25 05:26:53,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:53,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401961778] [2020-09-25 05:26:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:58,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:26:58,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:26:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:26:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:58,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:26:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:26:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:26:58,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:58,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:26:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:01,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:01,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2668 [2020-09-25 05:27:01,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:01,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:27:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:01,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:01,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:27:01,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:01,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:01,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:01,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:01,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:01,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:01,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:01,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:01,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:27:01,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:01,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 05:27:01,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401961778] [2020-09-25 05:27:01,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:01,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:01,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330548186] [2020-09-25 05:27:01,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:01,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:01,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:01,361 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 05:27:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:01,478 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-09-25 05:27:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:01,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:01,480 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:27:01,480 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:27:01,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:27:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 05:27:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 05:27:01,489 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 05:27:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:01,490 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 05:27:01,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 05:27:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:27:01,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:01,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:01,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:27:01,494 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:01,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 05:27:01,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:01,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993868403] [2020-09-25 05:27:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:27:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:27:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:27:06,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:06,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:27:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:06,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:06,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:06,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:06,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:07,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:27:11,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:27:11,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:27:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:11,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:11,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:27:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:11,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:27:11,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 05:27:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:11,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:11,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:11,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:11,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:11,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:27:11,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993868403] [2020-09-25 05:27:11,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:11,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:27:11,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054282681] [2020-09-25 05:27:11,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:27:11,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:11,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:27:11,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:11,700 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 6 states. [2020-09-25 05:27:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:11,775 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 05:27:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:11,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 05:27:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:11,777 INFO L225 Difference]: With dead ends: 104 [2020-09-25 05:27:11,777 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:27:11,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:27:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 05:27:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 05:27:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-09-25 05:27:11,787 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 67 [2020-09-25 05:27:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:11,787 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-09-25 05:27:11,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:27:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-09-25 05:27:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:27:11,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:11,790 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:11,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:27:11,791 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:11,791 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 05:27:11,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:11,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020560342] [2020-09-25 05:27:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:12,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:27:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:27:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:27:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:16,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 05:27:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:16,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:27:21,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:27:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:21,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:21,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:27:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:27:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:27:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:21,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:22,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:27:22,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:27:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:22,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:22,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:22,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:27:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:22,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:27:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:22,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:27:22,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:22,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 05:27:22,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:22,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:22,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:22,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:22,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:22,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:27:22,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:22,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:22,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:22,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:27:22,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:22,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:22,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 05:27:22,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020560342] [2020-09-25 05:27:22,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:22,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:27:22,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070371270] [2020-09-25 05:27:22,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:27:22,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:22,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:27:22,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:27:22,400 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 11 states. [2020-09-25 05:27:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:22,726 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2020-09-25 05:27:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:27:22,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 05:27:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:22,728 INFO L225 Difference]: With dead ends: 150 [2020-09-25 05:27:22,728 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 05:27:22,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:27:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 05:27:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2020-09-25 05:27:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 05:27:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2020-09-25 05:27:22,742 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 69 [2020-09-25 05:27:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:22,743 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2020-09-25 05:27:22,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:27:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2020-09-25 05:27:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 05:27:22,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:22,745 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:22,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:27:22,745 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 05:27:22,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:22,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932640309] [2020-09-25 05:27:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:22,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:27,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:27:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:27,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:27,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:27,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:27,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:27,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking...