/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:29:08,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:29:08,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:29:08,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:29:08,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:29:08,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:29:08,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:29:08,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:29:08,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:29:08,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:29:08,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:29:08,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:29:08,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:29:08,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:29:08,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:29:08,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:29:08,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:29:08,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:29:08,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:29:08,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:29:09,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:29:09,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:29:09,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:29:09,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:29:09,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:29:09,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:29:09,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:29:09,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:29:09,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:29:09,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:29:09,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:29:09,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:29:09,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:29:09,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:29:09,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:29:09,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:29:09,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:29:09,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:29:09,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:29:09,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:29:09,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:29:09,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:29:09,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:29:09,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:29:09,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:29:09,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:29:09,083 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:29:09,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:29:09,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:29:09,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:29:09,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:29:09,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:29:09,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:29:09,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:29:09,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:29:09,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:29:09,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:29:09,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:29:09,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:29:09,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:29:09,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:29:09,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:29:09,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:29:09,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:29:09,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:29:09,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:29:09,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:29:09,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:29:09,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:29:09,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:29:09,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:29:09,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:29:09,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:29:09,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:29:09,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:29:09,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:29:09,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:29:09,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-09-25 05:29:09,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c809feb85/efe1b714c26f480690df13571ee40766/FLAG54d40a5f1 [2020-09-25 05:29:10,212 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:29:10,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-09-25 05:29:10,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c809feb85/efe1b714c26f480690df13571ee40766/FLAG54d40a5f1 [2020-09-25 05:29:10,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c809feb85/efe1b714c26f480690df13571ee40766 [2020-09-25 05:29:10,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:29:10,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:29:10,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:29:10,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:29:10,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:29:10,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10, skipping insertion in model container [2020-09-25 05:29:10,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:29:10,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:29:10,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:29:10,855 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:29:10,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:29:10,892 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:29:10,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10 WrapperNode [2020-09-25 05:29:10,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:29:10,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:29:10,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:29:10,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:29:10,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... [2020-09-25 05:29:10,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:29:10,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:29:10,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:29:10,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:29:10,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:29:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:29:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:29:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 05:29:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:29:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:29:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 05:29:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:29:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:29:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:29:11,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:29:11,289 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:29:11,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:29:11 BoogieIcfgContainer [2020-09-25 05:29:11,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:29:11,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:29:11,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:29:11,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:29:11,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:29:10" (1/3) ... [2020-09-25 05:29:11,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a01a83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:29:11, skipping insertion in model container [2020-09-25 05:29:11,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:10" (2/3) ... [2020-09-25 05:29:11,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a01a83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:29:11, skipping insertion in model container [2020-09-25 05:29:11,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:29:11" (3/3) ... [2020-09-25 05:29:11,304 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2020-09-25 05:29:11,317 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:29:11,328 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:29:11,354 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:29:11,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:29:11,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:29:11,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:29:11,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:29:11,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:29:11,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:29:11,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:29:11,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:29:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 05:29:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 05:29:11,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:11,445 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 05:29:11,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:11,454 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 05:29:11,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:11,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993550524] [2020-09-25 05:29:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:11,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:11,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:29:11,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 05:29:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:11,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:29:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:29:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:29:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:12,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:12,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:12,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:12,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:29:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:12,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:12,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:12,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:29:12,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:12,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:29:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:29:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:29:12,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993550524] [2020-09-25 05:29:12,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:29:12,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:29:12,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338120460] [2020-09-25 05:29:12,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:29:12,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:12,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:29:12,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:29:12,157 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 05:29:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:12,258 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 05:29:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:29:12,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 05:29:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:12,275 INFO L225 Difference]: With dead ends: 39 [2020-09-25 05:29:12,275 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 05:29:12,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:29:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 05:29:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 05:29:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 05:29:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 05:29:12,333 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 05:29:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:12,334 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 05:29:12,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:29:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 05:29:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:29:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:12,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:12,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:29:12,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:12,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 05:29:12,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:12,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655211881] [2020-09-25 05:29:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:12,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:29:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 05:29:12,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:12,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:29:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:29:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:12,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:12,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:12,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 05:29:12,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:12,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:29:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:29:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:13,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:13,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:29:13,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:13,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 05:29:13,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655211881] [2020-09-25 05:29:13,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:13,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:29:13,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455904281] [2020-09-25 05:29:13,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:29:13,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:29:13,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:29:13,090 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-09-25 05:29:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:13,156 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 05:29:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:29:13,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 05:29:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:13,158 INFO L225 Difference]: With dead ends: 36 [2020-09-25 05:29:13,158 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 05:29:13,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:29:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 05:29:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 05:29:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 05:29:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 05:29:13,168 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 05:29:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:13,168 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 05:29:13,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:29:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 05:29:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:29:13,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:13,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:13,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:29:13,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:13,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:13,171 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 05:29:13,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:13,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071205179] [2020-09-25 05:29:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:29:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-25 05:29:13,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:13,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:13,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:13,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:13,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:13,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:13,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:13,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:13,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 05:29:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:13,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:29:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:13,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:13,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:13,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:29:13,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:13,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:13,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:13,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:13,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:29:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:14,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:29:14,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:29:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 05:29:14,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071205179] [2020-09-25 05:29:14,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:14,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:29:14,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746035957] [2020-09-25 05:29:14,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:29:14,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:29:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:29:14,066 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 05:29:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:14,165 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 05:29:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:29:14,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 05:29:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:14,167 INFO L225 Difference]: With dead ends: 41 [2020-09-25 05:29:14,167 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 05:29:14,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:29:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 05:29:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 05:29:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 05:29:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 05:29:14,176 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 05:29:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:14,177 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 05:29:14,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:29:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 05:29:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 05:29:14,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:14,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:14,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:29:14,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:14,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 05:29:14,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:14,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522077955] [2020-09-25 05:29:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:29:15,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-09-25 05:29:15,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:29:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:29:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:15,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:15,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 05:29:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:29:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:29:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:15,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 05:29:15,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:15,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:15,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 05:29:15,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:29:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:15,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 05:29:15,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522077955] [2020-09-25 05:29:15,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:15,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:29:15,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832355863] [2020-09-25 05:29:15,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:29:15,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:15,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:29:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:29:15,569 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 05:29:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:15,665 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 05:29:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:29:15,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 05:29:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:15,667 INFO L225 Difference]: With dead ends: 46 [2020-09-25 05:29:15,667 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 05:29:15,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:29:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 05:29:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 05:29:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:29:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 05:29:15,679 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 05:29:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:15,679 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 05:29:15,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:29:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 05:29:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:29:15,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:15,681 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:15,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:29:15,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 05:29:15,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:15,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009039422] [2020-09-25 05:29:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:16,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:29:16,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-09-25 05:29:16,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:16,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:29:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:29:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:16,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:16,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:16,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:16,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:17,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 05:29:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:29:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:29:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:17,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 05:29:17,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:17,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 05:29:17,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:29:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:17,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:17,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:29:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:17,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 05:29:17,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009039422] [2020-09-25 05:29:17,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:17,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:29:17,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245767859] [2020-09-25 05:29:17,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:29:17,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:17,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:29:17,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:29:17,654 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 05:29:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:17,749 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 05:29:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:29:17,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 05:29:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:17,751 INFO L225 Difference]: With dead ends: 51 [2020-09-25 05:29:17,751 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 05:29:17,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:29:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 05:29:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 05:29:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 05:29:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 05:29:17,760 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 05:29:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:17,760 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 05:29:17,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:29:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 05:29:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:29:17,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:17,763 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:17,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:29:17,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:17,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:17,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 05:29:17,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:17,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206359382] [2020-09-25 05:29:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:19,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:19,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:29:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-09-25 05:29:19,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:19,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:29:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:29:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:19,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:19,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:19,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:19,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:19,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 05:29:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:19,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:29:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:29:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:19,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:20,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 05:29:20,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:20,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 05:29:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:20,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 05:29:20,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 05:29:20,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:20,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:20,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:20,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:29:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:20,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 05:29:20,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206359382] [2020-09-25 05:29:20,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:20,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:29:20,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983113809] [2020-09-25 05:29:20,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:29:20,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:29:20,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:29:20,707 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 05:29:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:20,855 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 05:29:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:29:20,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 05:29:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:20,858 INFO L225 Difference]: With dead ends: 56 [2020-09-25 05:29:20,860 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 05:29:20,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:29:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 05:29:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 05:29:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:29:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 05:29:20,880 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 05:29:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:20,881 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 05:29:20,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:29:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 05:29:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 05:29:20,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:20,884 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:20,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:29:20,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:20,887 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 05:29:20,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:20,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248435306] [2020-09-25 05:29:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-09-25 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:29:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:22,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:22,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:22,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:23,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:23,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:23,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-25 05:29:23,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:23,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:29:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:29:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:23,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:23,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 05:29:23,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:23,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:23,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:23,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:23,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:23,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 05:29:23,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:23,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:24,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 05:29:24,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:24,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 05:29:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:24,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:24,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:24,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:24,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:29:24,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:24,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:24,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:24,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:24,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:29:24,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:24,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 21 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 05:29:24,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248435306] [2020-09-25 05:29:24,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:24,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:29:24,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418248330] [2020-09-25 05:29:24,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:29:24,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:29:24,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:29:24,323 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 05:29:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:24,471 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 05:29:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:29:24,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 05:29:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:24,473 INFO L225 Difference]: With dead ends: 61 [2020-09-25 05:29:24,473 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 05:29:24,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:29:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 05:29:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 05:29:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 05:29:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 05:29:24,482 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 05:29:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:24,482 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 05:29:24,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:29:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 05:29:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 05:29:24,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:24,484 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:24,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:29:24,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:24,485 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 05:29:24,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:24,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055633151] [2020-09-25 05:29:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:29:26,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-09-25 05:29:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:29:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:29:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:26,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-25 05:29:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:26,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:29:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 05:29:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:27,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:27,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:27,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-25 05:29:27,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:27,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:27,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:27,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:27,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 05:29:27,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:27,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:27,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:27,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:27,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 05:29:27,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:27,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:27,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:28,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:28,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 05:29:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:28,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:28,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:28,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 05:29:28,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:28,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:28,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:28,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:28,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:29:28,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:28,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:28,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:28,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:28,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:28,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:29:28,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:28,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:28,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:28,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 24 proven. 137 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 05:29:28,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055633151] [2020-09-25 05:29:28,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:28,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 05:29:28,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548934795] [2020-09-25 05:29:28,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:29:28,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:28,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:29:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:29:28,352 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 05:29:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:28,484 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 05:29:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:29:28,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 05:29:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:28,487 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:29:28,487 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:29:28,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:29:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:29:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 05:29:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:29:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 05:29:28,495 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 05:29:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:28,495 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 05:29:28,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:29:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 05:29:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 05:29:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:28,497 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:28,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:29:28,497 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 05:29:28,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:28,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526483415] [2020-09-25 05:29:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:31,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:31,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 05:29:31,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3402 [2020-09-25 05:29:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:31,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:29:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:29:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:31,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:31,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:31,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:32,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:32,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:29:32,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 05:29:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:32,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:29:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:29:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:33,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:33,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:33,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-25 05:29:33,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:33,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:29:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:29:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:33,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:33,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:33,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:33,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-25 05:29:33,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:33,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:33,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:33,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:33,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 05:29:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:33,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:33,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:34,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:34,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:34,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 05:29:34,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:34,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:34,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 05:29:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:34,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:34,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:34,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:34,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 05:29:34,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:34,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:34,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:34,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:34,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:34,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:29:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:34,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:34,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:34,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:29:34,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:34,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 30 proven. 177 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 05:29:34,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526483415] [2020-09-25 05:29:34,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:34,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:29:34,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852719073] [2020-09-25 05:29:34,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:29:34,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:29:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:29:34,671 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 05:29:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:34,839 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 05:29:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:29:34,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 05:29:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:34,841 INFO L225 Difference]: With dead ends: 71 [2020-09-25 05:29:34,845 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 05:29:34,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:29:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 05:29:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 05:29:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 05:29:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 05:29:34,860 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 05:29:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:34,860 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 05:29:34,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:29:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 05:29:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 05:29:34,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:34,862 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:34,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:29:34,862 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:34,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 05:29:34,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:34,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477505013] [2020-09-25 05:29:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 05:29:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2237 [2020-09-25 05:29:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:37,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:29:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:29:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:37,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:37,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:29:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 05:29:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:37,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:38,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:29:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 05:29:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:38,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:29:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:29:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:38,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:38,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:38,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 05:29:38,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:38,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:29:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:29:38,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 05:29:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 05:29:39,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:39,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:39,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 05:29:39,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:39,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 05:29:39,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:39,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:29:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:29:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:39,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:39,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:39,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:39,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:29:39,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:39,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 24 proven. 244 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 05:29:39,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477505013] [2020-09-25 05:29:39,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:39,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 05:29:39,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106484257] [2020-09-25 05:29:39,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 05:29:39,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:39,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 05:29:39,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:29:39,859 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 05:29:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:39,998 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 05:29:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:29:39,999 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 05:29:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:40,000 INFO L225 Difference]: With dead ends: 76 [2020-09-25 05:29:40,000 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 05:29:40,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 05:29:40,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 05:29:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 05:29:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 05:29:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 05:29:40,007 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 05:29:40,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:40,008 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 05:29:40,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 05:29:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 05:29:40,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 05:29:40,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:40,009 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:40,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:29:40,010 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:40,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:40,010 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 05:29:40,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:40,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269884778] [2020-09-25 05:29:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:45,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 05:29:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4989 [2020-09-25 05:29:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:45,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-25 05:29:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:29:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:45,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:45,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:45,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:45,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:45,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:45,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:45,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3926 [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-09-25 05:29:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 05:29:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:50,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:50,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:29:50,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-09-25 05:29:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:50,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-09-25 05:29:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:29:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:51,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:51,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:29:51,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:51,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-09-25 05:29:51,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:51,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-09-25 05:29:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:29:51,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:29:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-09-25 05:29:52,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-09-25 05:29:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:29:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:53,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:53,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:53,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-09-25 05:29:53,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:53,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 05:29:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:29:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:53,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:53,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-09-25 05:29:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:53,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 05:29:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:54,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 05:29:54,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 05:29:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:54,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:54,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:54,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 05:29:54,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:54,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:29:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:29:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:55,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:55,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 05:29:55,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:55,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:29:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:55,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 05:29:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:55,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:55,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:55,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:29:55,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:55,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 19 proven. 255 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-09-25 05:29:55,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269884778] [2020-09-25 05:29:55,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:55,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 05:29:55,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415158731] [2020-09-25 05:29:55,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 05:29:55,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:55,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 05:29:55,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-09-25 05:29:55,662 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 05:29:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:58,657 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 05:29:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-25 05:29:58,658 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-09-25 05:29:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:58,660 INFO L225 Difference]: With dead ends: 81 [2020-09-25 05:29:58,660 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 05:29:58,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2020-09-25 05:29:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 05:29:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 05:29:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 05:29:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 05:29:58,670 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 05:29:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:58,671 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 05:29:58,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 05:29:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 05:29:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 05:29:58,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:58,672 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:29:58,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:29:58,672 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 05:29:58,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:58,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196558622] [2020-09-25 05:29:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking...