/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=0.8 --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 07:45:15,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:45:15,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:45:15,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:45:15,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:45:15,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:45:15,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:45:15,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:45:15,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:45:15,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:45:15,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:45:15,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:45:15,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:45:15,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:45:15,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:45:15,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:45:15,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:45:15,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:45:15,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:45:15,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:45:15,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:45:15,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:45:15,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:45:15,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:45:15,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:45:15,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:45:15,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:45:15,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:45:15,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:45:15,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:45:15,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:45:15,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:45:15,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:45:15,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:45:15,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:45:15,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:45:15,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:45:15,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:45:15,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:45:15,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:45:15,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:45:15,638 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 07:45:15,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:45:15,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:45:15,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:45:15,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:45:15,699 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:45:15,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:45:15,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:45:15,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:45:15,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:45:15,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:45:15,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:45:15,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:45:15,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:45:15,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:45:15,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:45:15,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:45:15,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:45:15,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:45:15,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:45:15,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:45:15,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:45:15,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:45:15,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:45:15,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:45:15,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:45:15,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:45:15,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:45:15,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:45:15,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:45:15,706 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:45:16,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:45:16,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:45:16,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:45:16,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:45:16,181 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:45:16,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 07:45:16,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12b4ce502/87391ab1454048f8b3acb09d759d9c4b/FLAG5a9f9c71c [2020-09-25 07:45:16,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:45:16,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 07:45:16,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12b4ce502/87391ab1454048f8b3acb09d759d9c4b/FLAG5a9f9c71c [2020-09-25 07:45:17,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12b4ce502/87391ab1454048f8b3acb09d759d9c4b [2020-09-25 07:45:17,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:45:17,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:45:17,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:45:17,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:45:17,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:45:17,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17, skipping insertion in model container [2020-09-25 07:45:17,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:45:17,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:45:17,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:45:17,465 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:45:17,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:45:17,503 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:45:17,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17 WrapperNode [2020-09-25 07:45:17,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:45:17,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:45:17,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:45:17,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:45:17,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... [2020-09-25 07:45:17,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:45:17,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:45:17,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:45:17,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:45:17,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:45:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:45:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:45:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 07:45:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:45:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:45:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:45:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 07:45:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:45:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:45:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:45:17,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:45:17,915 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:45:17,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:45:17 BoogieIcfgContainer [2020-09-25 07:45:17,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:45:17,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:45:17,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:45:17,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:45:17,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:45:17" (1/3) ... [2020-09-25 07:45:17,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:45:17, skipping insertion in model container [2020-09-25 07:45:17,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:45:17" (2/3) ... [2020-09-25 07:45:17,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:45:17, skipping insertion in model container [2020-09-25 07:45:17,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:45:17" (3/3) ... [2020-09-25 07:45:17,931 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-25 07:45:17,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:45:17,959 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:45:17,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:45:18,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:45:18,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:45:18,026 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:45:18,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:45:18,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:45:18,027 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:45:18,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:45:18,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:45:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 07:45:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 07:45:18,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:18,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:45:18,063 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:18,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 07:45:18,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:18,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958182188] [2020-09-25 07:45:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:18,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:45:18,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:45:18,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:18,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:45:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:45:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:18,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:18,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:18,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:45:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:18,407 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 07:45:18,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958182188] [2020-09-25 07:45:18,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:45:18,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:45:18,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88872976] [2020-09-25 07:45:18,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:45:18,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:18,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:45:18,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:45:18,441 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 07:45:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:18,565 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 07:45:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:45:18,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 07:45:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:18,581 INFO L225 Difference]: With dead ends: 44 [2020-09-25 07:45:18,582 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 07:45:18,586 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 07:45:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 07:45:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 07:45:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 07:45:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 07:45:18,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 07:45:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:18,648 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 07:45:18,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:45:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 07:45:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 07:45:18,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:18,651 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 07:45:18,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:45:18,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:18,652 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 07:45:18,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:18,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108616807] [2020-09-25 07:45:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:45:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 07:45:18,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:18,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:18,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:18,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:18,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:18,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:45:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:18,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:18,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:45:18,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:18,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:45:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:18,867 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 07:45:18,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108616807] [2020-09-25 07:45:18,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:45:18,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:45:18,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890394662] [2020-09-25 07:45:18,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:45:18,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:18,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:45:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:45:18,872 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 07:45:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:18,945 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 07:45:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:45:18,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 07:45:18,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:18,948 INFO L225 Difference]: With dead ends: 36 [2020-09-25 07:45:18,948 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 07:45:18,949 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 07:45:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 07:45:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 07:45:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 07:45:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 07:45:18,958 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 07:45:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:18,959 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 07:45:18,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:45:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 07:45:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 07:45:18,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:18,961 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 07:45:18,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:45:18,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 07:45:18,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:18,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66142975] [2020-09-25 07:45:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:19,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 07:45:19,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-25 07:45:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:19,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:45:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:45:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:19,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:45:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:19,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:45:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 07:45:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:19,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:45:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:19,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:19,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:19,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:19,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:45:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:19,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:45:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:20,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:20,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:45:20,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:20,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,026 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 07:45:20,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66142975] [2020-09-25 07:45:20,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:20,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:45:20,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847426298] [2020-09-25 07:45:20,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:45:20,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:20,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:45:20,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:45:20,029 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 07:45:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:20,115 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 07:45:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:45:20,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 07:45:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:20,118 INFO L225 Difference]: With dead ends: 62 [2020-09-25 07:45:20,118 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 07:45:20,120 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 07:45:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 07:45:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 07:45:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 07:45:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 07:45:20,130 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 07:45:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:20,131 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 07:45:20,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:45:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 07:45:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 07:45:20,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:20,133 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 07:45:20,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:45:20,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 07:45:20,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:20,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003158003] [2020-09-25 07:45:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:45:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 07:45:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:20,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:45:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:20,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:45:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:20,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:20,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:20,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 07:45:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:20,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:45:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:20,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:45:20,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:20,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:20,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:45:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:20,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:20,924 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 07:45:20,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003158003] [2020-09-25 07:45:20,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:20,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:45:20,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431483907] [2020-09-25 07:45:20,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:45:20,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:20,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:45:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:45:20,928 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 07:45:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:21,015 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 07:45:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:45:21,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 07:45:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:21,017 INFO L225 Difference]: With dead ends: 50 [2020-09-25 07:45:21,018 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 07:45:21,018 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 07:45:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 07:45:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 07:45:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 07:45:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 07:45:21,027 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 07:45:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:21,028 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 07:45:21,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:45:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 07:45:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 07:45:21,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:21,030 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 07:45:21,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:45:21,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:21,031 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 07:45:21,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:21,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375226526] [2020-09-25 07:45:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:21,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:45:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 07:45:21,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:21,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:45:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:21,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:21,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:21,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:45:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:45:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 07:45:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:21,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:21,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:21,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:21,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:21,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:45:21,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:21,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:45:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:21,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:22,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:45:22,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:22,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:22,019 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 07:45:22,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375226526] [2020-09-25 07:45:22,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:22,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:45:22,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550501466] [2020-09-25 07:45:22,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:45:22,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:22,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:45:22,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:45:22,022 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 07:45:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:22,151 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 07:45:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:45:22,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 07:45:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:22,156 INFO L225 Difference]: With dead ends: 94 [2020-09-25 07:45:22,156 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 07:45:22,157 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 07:45:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 07:45:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 07:45:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 07:45:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 07:45:22,173 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 07:45:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:22,173 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 07:45:22,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:45:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 07:45:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 07:45:22,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:22,176 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 07:45:22,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:45:22,177 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 07:45:22,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:22,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563926438] [2020-09-25 07:45:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:27,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:45:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:45:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:45:27,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:27,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:45:27,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:27,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:27,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:31,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:45:31,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:45:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3923 [2020-09-25 07:45:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:31,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:45:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:45:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 07:45:31,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:31,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:45:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:31,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:45:31,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:31,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:31,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:31,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:45:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:31,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:31,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:45:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:31,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:31,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:31,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:45:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:31,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:45:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:31,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:31,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 07:45:31,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563926438] [2020-09-25 07:45:31,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:31,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:45:31,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040648400] [2020-09-25 07:45:31,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:45:31,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:31,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:45:31,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:45:31,529 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 8 states. [2020-09-25 07:45:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:31,728 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-09-25 07:45:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:45:31,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 07:45:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:31,731 INFO L225 Difference]: With dead ends: 88 [2020-09-25 07:45:31,731 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 07:45:31,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:45:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 07:45:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-09-25 07:45:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 07:45:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-09-25 07:45:31,747 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 51 [2020-09-25 07:45:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:31,748 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-09-25 07:45:31,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:45:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-09-25 07:45:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 07:45:31,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:31,753 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 07:45:31,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:45:31,753 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:31,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 3 times [2020-09-25 07:45:31,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:31,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550582591] [2020-09-25 07:45:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 07:45:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:45:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:45:36,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:36,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:45:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:45:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:45:36,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:36,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:36,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:36,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:36,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:36,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:36,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:36,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:41,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:41,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:45:41,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 07:45:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:45:41,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:41,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:45:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:45:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:45:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:41,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:41,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 07:45:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:41,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:41,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:42,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:42,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:45:42,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:42,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:45:42,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:42,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:45:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:43,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:45:43,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:45:43,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-09-25 07:45:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:43,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:45:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:45:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:43,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:43,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:45:43,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:43,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:44,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:45:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 07:45:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:44,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:44,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:44,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:45:44,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:44,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:45:44,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:44,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 77 proven. 66 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-25 07:45:44,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550582591] [2020-09-25 07:45:44,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:44,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:45:44,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130151533] [2020-09-25 07:45:44,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:45:44,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:44,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:45:44,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:45:44,117 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 10 states. [2020-09-25 07:45:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:44,368 INFO L93 Difference]: Finished difference Result 182 states and 293 transitions. [2020-09-25 07:45:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:45:44,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 07:45:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:44,372 INFO L225 Difference]: With dead ends: 182 [2020-09-25 07:45:44,372 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 07:45:44,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:45:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 07:45:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2020-09-25 07:45:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 07:45:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 123 transitions. [2020-09-25 07:45:44,391 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 123 transitions. Word has length 87 [2020-09-25 07:45:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:44,392 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 123 transitions. [2020-09-25 07:45:44,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:45:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 123 transitions. [2020-09-25 07:45:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 07:45:44,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:44,395 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:45:44,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:45:44,396 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 4 times [2020-09-25 07:45:44,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:44,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972747842] [2020-09-25 07:45:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:49,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:45:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 07:45:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:45:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:49,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:45:49,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:45:49,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:49,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:45:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:45:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:45:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:45:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 07:45:54,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:45:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:45:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:54,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:45:54,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:45:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:45:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:45:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:45:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:45:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:45:54,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:45:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:45:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:45:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:45:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:45:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:45:54,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:45:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:54,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:54,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:45:54,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:45:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:45:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:45:54,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:45:54,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:45:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:45:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:45:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:45:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:45:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 58 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 07:45:54,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972747842] [2020-09-25 07:45:54,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:45:54,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:45:54,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657990502] [2020-09-25 07:45:54,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:45:54,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:45:54,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:45:54,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:45:54,802 INFO L87 Difference]: Start difference. First operand 86 states and 123 transitions. Second operand 9 states. [2020-09-25 07:45:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:45:54,952 INFO L93 Difference]: Finished difference Result 236 states and 371 transitions. [2020-09-25 07:45:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:45:54,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 07:45:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:45:54,961 INFO L225 Difference]: With dead ends: 236 [2020-09-25 07:45:54,961 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 07:45:54,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:45:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 07:45:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2020-09-25 07:45:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 07:45:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 211 transitions. [2020-09-25 07:45:54,984 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 211 transitions. Word has length 69 [2020-09-25 07:45:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:45:54,985 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 211 transitions. [2020-09-25 07:45:54,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:45:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 211 transitions. [2020-09-25 07:45:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 07:45:54,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:45:54,988 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 07:45:54,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:45:54,988 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:45:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:45:54,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1195346507, now seen corresponding path program 5 times [2020-09-25 07:45:54,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:45:54,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114859988] [2020-09-25 07:45:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:45:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:45:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:56,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:45:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 07:46:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:00,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:00,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:00,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:00,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:00,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:00,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:05,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 07:46:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:46:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:46:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:05,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:46:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:46:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 07:46:06,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:46:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 07:46:06,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:46:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 07:46:06,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 07:46:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:46:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:46:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:46:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:46:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:46:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:46:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 07:46:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:46:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:46:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:46:06,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:46:06,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:46:06,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:46:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:46:06,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:46:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:06,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:46:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:46:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 98 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:46:06,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114859988] [2020-09-25 07:46:06,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:06,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:46:06,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537026439] [2020-09-25 07:46:06,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:46:06,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:46:06,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:46:06,561 INFO L87 Difference]: Start difference. First operand 134 states and 211 transitions. Second operand 11 states. [2020-09-25 07:46:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:06,910 INFO L93 Difference]: Finished difference Result 278 states and 465 transitions. [2020-09-25 07:46:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:46:06,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 07:46:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:06,913 INFO L225 Difference]: With dead ends: 278 [2020-09-25 07:46:06,913 INFO L226 Difference]: Without dead ends: 146 [2020-09-25 07:46:06,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:46:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-25 07:46:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-09-25 07:46:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 07:46:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 148 transitions. [2020-09-25 07:46:06,948 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 148 transitions. Word has length 85 [2020-09-25 07:46:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:06,949 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 148 transitions. [2020-09-25 07:46:06,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:46:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 148 transitions. [2020-09-25 07:46:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 07:46:06,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:06,952 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 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 07:46:06,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:46:06,955 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:06,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1691344834, now seen corresponding path program 6 times [2020-09-25 07:46:06,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:06,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355482001] [2020-09-25 07:46:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:11,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 07:46:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:11,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:11,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:11,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:11,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:11,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:11,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:11,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:11,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:11,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:46:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 07:46:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...