/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=1.0 --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/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:20,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:20,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:20,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:20,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:20,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:20,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:20,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:20,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:20,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:20,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:20,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:20,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:20,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:20,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:20,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:20,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:20,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:20,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:20,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:20,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:20,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:20,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:20,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:20,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:20,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:20,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:20,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:20,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:20,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:20,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:20,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:20,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:20,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:20,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:20,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:20,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:20,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:20,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:20,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:20,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:20,599 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 08:52:20,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:20,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:20,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:20,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:20,658 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:20,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:20,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:20,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:20,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:20,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:20,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:20,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:20,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:20,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:20,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:20,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:20,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:20,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:20,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:20,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:20,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:20,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:20,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:20,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:20,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:20,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:20,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:20,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:20,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:20,665 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:52:21,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:21,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:21,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:21,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:21,210 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:21,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 08:52:21,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177ae572f/70e281091311436e8f381b047e606c9b/FLAGf6ddf4722 [2020-09-25 08:52:21,777 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:21,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 08:52:21,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177ae572f/70e281091311436e8f381b047e606c9b/FLAGf6ddf4722 [2020-09-25 08:52:22,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177ae572f/70e281091311436e8f381b047e606c9b [2020-09-25 08:52:22,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:22,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:22,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:22,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:22,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:22,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22, skipping insertion in model container [2020-09-25 08:52:22,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:22,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:22,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:22,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:22,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:22,509 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:22,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22 WrapperNode [2020-09-25 08:52:22,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:22,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:22,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:22,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:22,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (1/1) ... [2020-09-25 08:52:22,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:22,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:22,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:22,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:22,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (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 08:52:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 08:52:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:52:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 08:52:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:22,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:22,894 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:52:22,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:22 BoogieIcfgContainer [2020-09-25 08:52:22,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:22,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:22,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:22,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:22,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:22" (1/3) ... [2020-09-25 08:52:22,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ded0666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:22, skipping insertion in model container [2020-09-25 08:52:22,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:22" (2/3) ... [2020-09-25 08:52:22,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ded0666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:22, skipping insertion in model container [2020-09-25 08:52:22,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:22" (3/3) ... [2020-09-25 08:52:22,914 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-09-25 08:52:22,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:22,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:22,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:23,007 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:23,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:23,008 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:23,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:23,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:23,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:23,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:23,009 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 08:52:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 08:52:23,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:23,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:23,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 08:52:23,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:23,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468708793] [2020-09-25 08:52:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:52:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 08:52:23,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 08:52:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:52:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:23,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:52:23,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:52:23,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:23,512 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 08:52:23,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468708793] [2020-09-25 08:52:23,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:23,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:52:23,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197254483] [2020-09-25 08:52:23,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:52:23,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:52:23,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:23,540 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 08:52:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:23,672 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 08:52:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:23,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 08:52:23,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:23,689 INFO L225 Difference]: With dead ends: 48 [2020-09-25 08:52:23,690 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 08:52:23,695 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 08:52:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 08:52:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 08:52:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 08:52:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 08:52:23,753 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 08:52:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:23,754 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 08:52:23,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:52:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 08:52:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 08:52:23,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:23,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:23,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:23,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 08:52:23,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:23,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633417832] [2020-09-25 08:52:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 08:52:23,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 08:52:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 08:52:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:52:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:23,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:23,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:52:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:24,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 08:52:24,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:24,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,029 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 08:52:24,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633417832] [2020-09-25 08:52:24,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:24,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:52:24,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109571990] [2020-09-25 08:52:24,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:52:24,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:24,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:52:24,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:24,034 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 08:52:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:24,102 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 08:52:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:24,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 08:52:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:24,104 INFO L225 Difference]: With dead ends: 38 [2020-09-25 08:52:24,105 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 08:52:24,106 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 08:52:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 08:52:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 08:52:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 08:52:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 08:52:24,114 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 08:52:24,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:24,115 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 08:52:24,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:52:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 08:52:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:52:24,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:24,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:24,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:24,118 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:24,119 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 08:52:24,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:24,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340249620] [2020-09-25 08:52:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-09-25 08:52:24,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:24,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:52:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 08:52:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:52:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:24,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:52:24,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:24,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:52:24,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:24,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,939 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 08:52:24,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340249620] [2020-09-25 08:52:24,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:24,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:52:24,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882200598] [2020-09-25 08:52:24,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:52:24,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:24,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:52:24,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:52:24,944 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 08:52:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:25,085 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 08:52:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:52:25,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 08:52:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:25,089 INFO L225 Difference]: With dead ends: 68 [2020-09-25 08:52:25,089 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:52:25,092 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 08:52:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:52:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 08:52:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 08:52:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 08:52:25,114 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 08:52:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:25,115 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 08:52:25,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:52:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 08:52:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 08:52:25,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:25,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:25,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:25,120 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:25,121 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 08:52:25,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:25,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921960127] [2020-09-25 08:52:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:52:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-25 08:52:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 08:52:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:25,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:25,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:25,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:52:25,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 08:52:25,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:52:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:52:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:52:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:52:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:26,097 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 08:52:26,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921960127] [2020-09-25 08:52:26,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:26,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:52:26,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640615370] [2020-09-25 08:52:26,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:52:26,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:26,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:52:26,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:52:26,103 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 08:52:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:26,270 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-09-25 08:52:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:52:26,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 08:52:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:26,275 INFO L225 Difference]: With dead ends: 56 [2020-09-25 08:52:26,276 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 08:52:26,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 08:52:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-25 08:52:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 08:52:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-09-25 08:52:26,297 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2020-09-25 08:52:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:26,299 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-09-25 08:52:26,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:52:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-09-25 08:52:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 08:52:26,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:26,305 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, 1, 1] [2020-09-25 08:52:26,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:26,305 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:26,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1801616585, now seen corresponding path program 2 times [2020-09-25 08:52:26,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:26,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685281736] [2020-09-25 08:52:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 08:52:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:52:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:52:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:52:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 08:52:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:31,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:31,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:52:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:52:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:36,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:52:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 08:52:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:52:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 08:52:36,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:36,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:52:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:36,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:36,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:36,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:36,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:36,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:36,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:36,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:52:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:52:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:52:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2686 [2020-09-25 08:52:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:52:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:52:39,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:39,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 08:52:39,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:52:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:39,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:39,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:52:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:39,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 08:52:39,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685281736] [2020-09-25 08:52:39,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:39,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:52:39,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692541371] [2020-09-25 08:52:39,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:52:39,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:39,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:52:39,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:52:39,647 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 9 states. [2020-09-25 08:52:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:39,865 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2020-09-25 08:52:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:52:39,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 08:52:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:39,868 INFO L225 Difference]: With dead ends: 81 [2020-09-25 08:52:39,868 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 08:52:39,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:52:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 08:52:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 08:52:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 08:52:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-09-25 08:52:39,885 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 87 [2020-09-25 08:52:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:39,887 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-09-25 08:52:39,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:52:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-09-25 08:52:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 08:52:39,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:39,892 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:39,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:52:39,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:39,897 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 3 times [2020-09-25 08:52:39,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:39,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983668423] [2020-09-25 08:52:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 08:52:44,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:52:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:52:44,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:52:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 08:52:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:44,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 08:52:49,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:52:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:52:49,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:49,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:52:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:52:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:50,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:52:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 08:52:50,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:50,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:52:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:50,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:50,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:50,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:50,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:52:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:50,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:50,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:50,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:52:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:52:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:52:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:52:53,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 08:52:53,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:52:53,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:52:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:52:53,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:52:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:52:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:52:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 72 proven. 75 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 08:52:53,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983668423] [2020-09-25 08:52:53,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:53,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:52:53,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252772920] [2020-09-25 08:52:53,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:52:53,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:53,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:52:53,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:53,377 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 10 states. [2020-09-25 08:52:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:53,614 INFO L93 Difference]: Finished difference Result 106 states and 142 transitions. [2020-09-25 08:52:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:52:53,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 08:52:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:53,618 INFO L225 Difference]: With dead ends: 106 [2020-09-25 08:52:53,618 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 08:52:53,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:52:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 08:52:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 08:52:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 08:52:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-09-25 08:52:53,630 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 89 [2020-09-25 08:52:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:53,631 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-09-25 08:52:53,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:52:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-09-25 08:52:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 08:52:53,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:53,633 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 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 08:52:53,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:52:53,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:53,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1419436827, now seen corresponding path program 1 times [2020-09-25 08:52:53,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:53,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595101656] [2020-09-25 08:52:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:52:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:52:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:52:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:03,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:03,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 08:53:03,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:53:03,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 08:53:03,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:03,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:53:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:53:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:53:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:04,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:04,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 08:53:04,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:04,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:53:04,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:04,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:04,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:53:04,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:04,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:04,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:04,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:53:04,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:04,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:04,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:53:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:53:09,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:53:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:53:09,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 08:53:09,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:09,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:09,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:53:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:09,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:53:09,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 77 proven. 79 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-25 08:53:09,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595101656] [2020-09-25 08:53:09,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:09,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:09,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417828591] [2020-09-25 08:53:09,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:09,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:09,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:09,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:09,343 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 9 states. [2020-09-25 08:53:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:09,608 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2020-09-25 08:53:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:53:09,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-09-25 08:53:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:09,610 INFO L225 Difference]: With dead ends: 109 [2020-09-25 08:53:09,610 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:53:09,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:53:09,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:53:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-09-25 08:53:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 08:53:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-25 08:53:09,619 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 91 [2020-09-25 08:53:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:09,620 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-25 08:53:09,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-25 08:53:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 08:53:09,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:09,622 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:09,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:09,622 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 4 times [2020-09-25 08:53:09,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:09,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204751465] [2020-09-25 08:53:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking...