/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=0.2 --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_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:18:51,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:18:51,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:18:51,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:18:51,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:18:51,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:18:51,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:18:51,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:18:51,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:18:51,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:18:51,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:18:51,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:18:51,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:18:51,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:18:51,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:18:51,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:18:51,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:18:51,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:18:51,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:18:51,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:18:51,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:18:51,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:18:51,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:18:51,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:18:51,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:18:51,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:18:51,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:18:51,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:18:51,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:18:51,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:18:51,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:18:51,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:18:51,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:18:51,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:18:51,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:18:51,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:18:51,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:18:51,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:18:51,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:18:51,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:18:51,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:18:51,782 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 04:18:51,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:18:51,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:18:51,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:18:51,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:18:51,809 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:18:51,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:18:51,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:18:51,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:18:51,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:18:51,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:18:51,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:18:51,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:18:51,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:18:51,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:18:51,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:18:51,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:18:51,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:18:51,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:18:51,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:18:51,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:18:51,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:18:51,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:51,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:18:51,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:18:51,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:18:51,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:18:51,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:18:51,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:18:51,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:18:51,814 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:18:52,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:18:52,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:18:52,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:18:52,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:18:52,319 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:18:52,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 04:18:52,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa49869c/e12564bcd38f43329b89f9d55453a19b/FLAGd6126bc7e [2020-09-25 04:18:52,947 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:18:52,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 04:18:52,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa49869c/e12564bcd38f43329b89f9d55453a19b/FLAGd6126bc7e [2020-09-25 04:18:53,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa49869c/e12564bcd38f43329b89f9d55453a19b [2020-09-25 04:18:53,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:18:53,323 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:18:53,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:53,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:18:53,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:18:53,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53, skipping insertion in model container [2020-09-25 04:18:53,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:18:53,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:18:53,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:53,613 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:18:53,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:53,660 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:18:53,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53 WrapperNode [2020-09-25 04:18:53,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:53,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:18:53,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:18:53,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:18:53,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (1/1) ... [2020-09-25 04:18:53,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:18:53,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:18:53,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:18:53,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:18:53,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (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 04:18:53,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:18:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:18:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:18:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:18:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:18:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:18:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:18:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:18:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:18:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:18:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:18:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:18:54,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:18:54,208 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:18:54,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:54 BoogieIcfgContainer [2020-09-25 04:18:54,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:18:54,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:18:54,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:18:54,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:18:54,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:18:53" (1/3) ... [2020-09-25 04:18:54,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:54, skipping insertion in model container [2020-09-25 04:18:54,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:53" (2/3) ... [2020-09-25 04:18:54,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:54, skipping insertion in model container [2020-09-25 04:18:54,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:54" (3/3) ... [2020-09-25 04:18:54,224 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-25 04:18:54,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:18:54,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:18:54,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:18:54,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:18:54,317 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:18:54,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:18:54,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:18:54,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:18:54,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:18:54,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:18:54,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:18:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:18:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:18:54,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:54,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:54,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:18:54,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:54,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228666241] [2020-09-25 04:18:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:54,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:54,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:54,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 04:18:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:54,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:18:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:18:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:54,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:18:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:54,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:54,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:54,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:54,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:54,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:18:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:18:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:54,820 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 04:18:54,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228666241] [2020-09-25 04:18:54,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:54,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:54,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767416174] [2020-09-25 04:18:54,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:54,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:54,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:54,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:54,849 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:18:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:54,960 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:18:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:54,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:18:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:54,976 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:54,977 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:18:54,981 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 04:18:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:18:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:18:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:55,040 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:18:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:55,041 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:55,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:18:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:55,044 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 04:18:55,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:18:55,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:18:55,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:55,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091181265] [2020-09-25 04:18:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:18:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 04:18:55,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:55,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:55,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:55,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:55,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:55,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:55,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:55,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:55,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:18:55,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:55,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:55,334 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 04:18:55,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091181265] [2020-09-25 04:18:55,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:55,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:55,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327697605] [2020-09-25 04:18:55,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:55,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:55,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:55,339 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:18:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:55,409 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:18:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:55,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:18:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:55,412 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:18:55,412 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:18:55,413 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 04:18:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:18:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:18:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:55,425 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:18:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:55,425 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:55,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:18:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:55,428 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 04:18:55,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:18:55,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:18:55,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:55,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499910177] [2020-09-25 04:18:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:18:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-09-25 04:18:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:18:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:57,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 04:18:57,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:57,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:57,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:18:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:18:57,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,610 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 04:18:57,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499910177] [2020-09-25 04:18:57,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:57,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:18:57,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544361068] [2020-09-25 04:18:57,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:57,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:57,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:57,613 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:18:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:57,747 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:18:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:57,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:18:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:57,750 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:57,751 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:18:57,752 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 04:18:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:18:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:18:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:57,763 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:18:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:57,764 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:57,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:18:57,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:57,766 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 04:18:57,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:18:57,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:57,767 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:18:57,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:57,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518095554] [2020-09-25 04:18:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:18:59,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:18:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1992 [2020-09-25 04:18:59,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:18:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:18:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:00,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 04:19:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:00,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:19:00,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:00,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:00,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:19:00,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518095554] [2020-09-25 04:19:00,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:00,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:00,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879907003] [2020-09-25 04:19:00,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:00,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:00,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:00,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:00,436 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:19:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:00,566 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 04:19:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:00,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:19:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:00,569 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:19:00,569 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:19:00,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:19:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:19:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 04:19:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:19:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 04:19:00,581 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 04:19:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:00,582 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 04:19:00,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 04:19:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:00,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:00,585 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 04:19:00,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:00,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:00,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:00,586 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:19:00,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:00,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671748962] [2020-09-25 04:19:00,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:19:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:05,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:05,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:05,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:05,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:05,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:09,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4100 [2020-09-25 04:19:09,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 04:19:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:09,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:09,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:09,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:19:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:09,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:09,963 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 04:19:09,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671748962] [2020-09-25 04:19:09,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:09,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:09,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656432870] [2020-09-25 04:19:09,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:09,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:09,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:09,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:09,966 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 04:19:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:10,094 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 04:19:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:10,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:10,096 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:19:10,096 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:19:10,097 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 04:19:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:19:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 04:19:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:19:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:19:10,107 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 04:19:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:10,107 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:19:10,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:19:10,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:19:10,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:10,110 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 04:19:10,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:10,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:10,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:10,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:19:10,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:10,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041627788] [2020-09-25 04:19:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:19:15,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:19:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:19:15,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:19:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:15,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:15,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:15,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:15,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:15,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:19:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:19:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:20,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:19:20,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:20,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:20,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:19:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:20,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:20,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:20,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:20,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:20,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:19:20,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:19:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:20,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:19:20,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041627788] [2020-09-25 04:19:20,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:20,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:20,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463837245] [2020-09-25 04:19:20,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:20,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:20,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:20,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:20,386 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 6 states. [2020-09-25 04:19:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:20,480 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2020-09-25 04:19:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:20,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:19:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:20,482 INFO L225 Difference]: With dead ends: 98 [2020-09-25 04:19:20,483 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 04:19:20,484 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 04:19:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 04:19:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 04:19:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:19:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-25 04:19:20,493 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 67 [2020-09-25 04:19:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:20,493 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-25 04:19:20,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-25 04:19:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:19:20,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:20,496 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 04:19:20,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:19:20,496 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:20,497 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:19:20,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:20,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783617202] [2020-09-25 04:19:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:19:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:25,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:25,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:25,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:25,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:25,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:30,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:19:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:19:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:30,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:30,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:19:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:19:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:31,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:31,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 04:19:31,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:31,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:19:31,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:31,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:31,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:19:31,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:31,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:31,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:19:31,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:31,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:31,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:19:31,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:31,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:19:31,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:31,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:19:31,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783617202] [2020-09-25 04:19:31,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:31,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:19:31,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072348172] [2020-09-25 04:19:31,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:19:31,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:31,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:19:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:31,289 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 9 states. [2020-09-25 04:19:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:31,477 INFO L93 Difference]: Finished difference Result 118 states and 163 transitions. [2020-09-25 04:19:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:19:31,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 04:19:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:31,479 INFO L225 Difference]: With dead ends: 118 [2020-09-25 04:19:31,479 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 04:19:31,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:19:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 04:19:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-25 04:19:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:19:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2020-09-25 04:19:31,491 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 69 [2020-09-25 04:19:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:31,491 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2020-09-25 04:19:31,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:19:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2020-09-25 04:19:31,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 04:19:31,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:31,494 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 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 04:19:31,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:19:31,494 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:31,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 04:19:31,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:31,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338656530] [2020-09-25 04:19:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 04:19:36,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:36,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 04:19:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:36,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:36,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:41,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:19:41,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 04:19:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:41,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:41,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:19:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:42,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 04:19:42,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:19:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:19:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:42,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:42,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:42,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 04:19:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:19:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 04:19:42,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338656530] [2020-09-25 04:19:42,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:42,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:42,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390838207] [2020-09-25 04:19:42,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:42,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:42,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:42,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:42,880 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 6 states. [2020-09-25 04:19:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:42,949 INFO L93 Difference]: Finished difference Result 138 states and 192 transitions. [2020-09-25 04:19:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:42,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-25 04:19:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:42,951 INFO L225 Difference]: With dead ends: 138 [2020-09-25 04:19:42,951 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 04:19:42,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 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 04:19:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 04:19:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-25 04:19:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:19:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-09-25 04:19:42,966 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 101 [2020-09-25 04:19:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:42,967 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-09-25 04:19:42,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-09-25 04:19:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 04:19:42,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:42,969 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:42,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:19:42,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash -271039366, now seen corresponding path program 1 times [2020-09-25 04:19:42,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:42,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116498100] [2020-09-25 04:19:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking...