/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:27:38,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:27:38,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:27:38,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:27:38,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:27:38,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:27:38,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:27:38,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:27:38,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:27:38,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:27:38,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:27:38,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:27:38,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:27:38,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:27:38,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:27:38,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:27:38,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:27:38,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:27:38,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:27:38,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:27:38,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:27:38,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:27:38,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:27:38,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:27:38,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:27:38,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:27:38,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:27:38,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:27:38,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:27:38,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:27:38,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:27:38,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:27:38,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:27:38,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:27:38,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:27:38,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:27:38,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:27:38,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:27:38,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:27:38,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:27:38,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:27:38,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:27:38,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:27:38,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:27:38,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:27:38,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:27:38,831 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:27:38,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:27:38,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:27:38,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:27:38,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:27:38,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:27:38,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:27:38,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:27:38,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:27:38,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:27:38,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:27:38,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:27:38,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:27:38,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:27:38,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:27:38,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:27:38,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:27:38,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:38,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:27:38,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:27:38,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:27:38,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:27:38,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:27:38,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:27:38,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:27:38,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:27:39,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:27:39,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:27:39,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:27:39,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:27:39,316 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:27:39,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 05:27:39,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7eccb86/13e25d4dc02142cf9b56a70778ab29ae/FLAG822297554 [2020-09-25 05:27:39,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:27:39,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 05:27:39,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7eccb86/13e25d4dc02142cf9b56a70778ab29ae/FLAG822297554 [2020-09-25 05:27:40,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7eccb86/13e25d4dc02142cf9b56a70778ab29ae [2020-09-25 05:27:40,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:27:40,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:27:40,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:40,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:27:40,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:27:40,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40, skipping insertion in model container [2020-09-25 05:27:40,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:27:40,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:27:40,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:40,597 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:27:40,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:40,629 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:27:40,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40 WrapperNode [2020-09-25 05:27:40,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:40,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:27:40,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:27:40,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:27:40,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... [2020-09-25 05:27:40,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:27:40,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:27:40,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:27:40,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:27:40,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:27:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:27:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 05:27:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:27:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:27:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:27:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 05:27:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:27:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:27:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:27:41,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:27:41,046 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:27:41,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:41 BoogieIcfgContainer [2020-09-25 05:27:41,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:27:41,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:27:41,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:27:41,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:27:41,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:27:40" (1/3) ... [2020-09-25 05:27:41,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:41, skipping insertion in model container [2020-09-25 05:27:41,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:40" (2/3) ... [2020-09-25 05:27:41,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:41, skipping insertion in model container [2020-09-25 05:27:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:41" (3/3) ... [2020-09-25 05:27:41,062 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-25 05:27:41,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:27:41,088 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:27:41,117 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:27:41,157 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:27:41,157 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:27:41,158 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:27:41,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:27:41,158 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:27:41,158 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:27:41,159 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:27:41,159 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:27:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 05:27:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:27:41,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:41,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:41,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:41,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 05:27:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:41,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159804191] [2020-09-25 05:27:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:41,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:27:41,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:27:41,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:41,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:27:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:27:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:41,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:41,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:41,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:41,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:41,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:41,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:27:41,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:41,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:41,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159804191] [2020-09-25 05:27:41,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:41,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:41,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865443215] [2020-09-25 05:27:41,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:41,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:41,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:41,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:41,633 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 05:27:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:41,759 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 05:27:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:27:41,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:27:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:41,774 INFO L225 Difference]: With dead ends: 44 [2020-09-25 05:27:41,774 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 05:27:41,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 05:27:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 05:27:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 05:27:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 05:27:41,834 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 05:27:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:41,834 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 05:27:41,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 05:27:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:27:41,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:41,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:41,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:27:41,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:41,839 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 05:27:41,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:41,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406739472] [2020-09-25 05:27:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:41,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:41,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:27:41,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 05:27:41,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:41,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:41,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:41,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:42,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:42,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:27:42,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:42,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:42,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:42,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406739472] [2020-09-25 05:27:42,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:42,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:42,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918788353] [2020-09-25 05:27:42,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:42,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:42,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:42,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:42,047 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 05:27:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:42,120 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 05:27:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:27:42,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 05:27:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:42,122 INFO L225 Difference]: With dead ends: 36 [2020-09-25 05:27:42,123 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 05:27:42,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 05:27:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 05:27:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 05:27:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 05:27:42,133 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 05:27:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:42,133 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 05:27:42,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 05:27:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:27:42,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:42,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:42,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:27:42,136 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 05:27:42,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:42,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157534869] [2020-09-25 05:27:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:42,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:42,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:27:42,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-09-25 05:27:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:42,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:27:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:42,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:42,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:42,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:27:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:43,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 05:27:43,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:27:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:43,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:27:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 05:27:43,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157534869] [2020-09-25 05:27:43,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:43,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:43,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642036119] [2020-09-25 05:27:43,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:43,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:43,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:43,298 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 05:27:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:43,410 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 05:27:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:43,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:27:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:43,415 INFO L225 Difference]: With dead ends: 62 [2020-09-25 05:27:43,415 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 05:27:43,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 05:27:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 05:27:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 05:27:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 05:27:43,435 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 05:27:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:43,437 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 05:27:43,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 05:27:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:27:43,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:43,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:43,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:27:43,442 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 05:27:43,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:43,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323092349] [2020-09-25 05:27:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:27:43,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-25 05:27:43,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:27:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:43,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:43,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:43,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:43,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:43,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:43,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:27:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 05:27:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:27:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:44,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:27:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 05:27:44,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323092349] [2020-09-25 05:27:44,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:44,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:44,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896236000] [2020-09-25 05:27:44,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:44,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:44,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:44,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:44,322 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 05:27:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:44,411 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 05:27:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:44,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 05:27:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:44,414 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:27:44,414 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:27:44,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:27:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 05:27:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 05:27:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 05:27:44,423 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 05:27:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:44,424 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 05:27:44,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 05:27:44,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:27:44,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:44,426 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:44,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:27:44,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:44,427 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 05:27:44,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:44,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185146632] [2020-09-25 05:27:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:27:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:27:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-25 05:27:44,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:27:44,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:44,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:44,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:27:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:27:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-25 05:27:45,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:45,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:27:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:45,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:45,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:27:45,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:45,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:45,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:45,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:27:45,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:45,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 05:27:45,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185146632] [2020-09-25 05:27:45,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:45,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:27:45,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014308934] [2020-09-25 05:27:45,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:27:45,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:27:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:45,444 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 05:27:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:45,550 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 05:27:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:45,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 05:27:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:45,555 INFO L225 Difference]: With dead ends: 94 [2020-09-25 05:27:45,555 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 05:27:45,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:27:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 05:27:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 05:27:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 05:27:45,571 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 05:27:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:45,571 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 05:27:45,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:27:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 05:27:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:45,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:45,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 05:27:45,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:27:45,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:45,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 05:27:45,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:45,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679562539] [2020-09-25 05:27:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:50,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:27:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:27:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:50,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:50,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:50,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:50,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:50,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:50,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:53,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-09-25 05:27:53,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:27:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:53,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:27:53,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:53,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:53,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:53,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:53,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:27:53,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:53,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 05:27:54,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679562539] [2020-09-25 05:27:54,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:54,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:54,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079121424] [2020-09-25 05:27:54,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:54,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:54,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:54,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:54,010 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 7 states. [2020-09-25 05:27:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:54,175 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 05:27:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:54,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:54,184 INFO L225 Difference]: With dead ends: 68 [2020-09-25 05:27:54,184 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 05:27:54,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 05:27:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 05:27:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 05:27:54,210 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 51 [2020-09-25 05:27:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:54,211 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 05:27:54,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 05:27:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 05:27:54,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:54,221 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:54,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:27:54,222 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:54,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 05:27:54,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:54,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577463742] [2020-09-25 05:27:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:59,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 05:27:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 05:27:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:27:59,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:59,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:27:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:59,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:59,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:59,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 05:28:04,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:28:04,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:28:04,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:28:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:04,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:28:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:28:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:04,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:04,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:28:04,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:04,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:04,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:04,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:04,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:28:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:28:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:28:05,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:28:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-09-25 05:28:05,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:05,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:28:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:05,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:05,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:28:05,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:28:05,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:05,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:05,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:05,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:28:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:28:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:28:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:28:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:05,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:28:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:05,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-25 05:28:05,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577463742] [2020-09-25 05:28:05,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:05,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:28:05,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744710692] [2020-09-25 05:28:05,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:28:05,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:05,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:28:05,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:05,561 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 6 states. [2020-09-25 05:28:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:05,652 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2020-09-25 05:28:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:28:05,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 05:28:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:05,654 INFO L225 Difference]: With dead ends: 96 [2020-09-25 05:28:05,654 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 05:28:05,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:28:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 05:28:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 05:28:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 05:28:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-09-25 05:28:05,664 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 85 [2020-09-25 05:28:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:05,664 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-09-25 05:28:05,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:28:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-09-25 05:28:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 05:28:05,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:05,666 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:05,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:28:05,667 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 4 times [2020-09-25 05:28:05,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:05,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533194527] [2020-09-25 05:28:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 05:28:10,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 05:28:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:28:10,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:10,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:28:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:28:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:10,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:15,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:28:15,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 05:28:15,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:15,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:15,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:28:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:28:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:16,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:28:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-25 05:28:16,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:16,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:28:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:16,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:16,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:16,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:28:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:16,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:16,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:16,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:28:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:16,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:28:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:28:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:17,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:28:17,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:28:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-09-25 05:28:17,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:17,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:28:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:17,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:17,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:17,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:28:17,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:17,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:28:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:17,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:17,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:28:17,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:17,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:28:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:17,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:17,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:17,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:17,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:17,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:17,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:17,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:17,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 53 proven. 76 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 05:28:17,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533194527] [2020-09-25 05:28:17,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:17,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:28:17,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564460191] [2020-09-25 05:28:17,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:28:17,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:17,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:28:17,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:28:17,486 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 8 states. [2020-09-25 05:28:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:17,705 INFO L93 Difference]: Finished difference Result 109 states and 155 transitions. [2020-09-25 05:28:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:28:17,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 05:28:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:17,707 INFO L225 Difference]: With dead ends: 109 [2020-09-25 05:28:17,707 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 05:28:17,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:28:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 05:28:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 05:28:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 05:28:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-09-25 05:28:17,715 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 87 [2020-09-25 05:28:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:17,716 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-09-25 05:28:17,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:28:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-09-25 05:28:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 05:28:17,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:17,718 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:17,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:28:17,718 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:17,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:17,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 05:28:17,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:17,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657475937] [2020-09-25 05:28:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:22,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 05:28:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:28:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:28:22,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:22,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:28:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:28:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:28:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:22,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:22,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:22,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:22,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:27,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:28:27,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 05:28:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:28:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:27,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:28:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:28:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:28:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking...