/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:40:24,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:40:24,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:40:24,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:40:24,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:40:24,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:40:24,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:40:24,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:40:24,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:40:24,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:40:24,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:40:24,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:40:24,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:40:24,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:40:24,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:40:24,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:40:24,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:40:24,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:40:24,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:40:24,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:40:25,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:40:25,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:40:25,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:40:25,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:40:25,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:40:25,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:40:25,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:40:25,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:40:25,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:40:25,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:40:25,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:40:25,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:40:25,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:40:25,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:40:25,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:40:25,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:40:25,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:40:25,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:40:25,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:40:25,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:40:25,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:40:25,019 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 [2020-09-24 22:40:25,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:40:25,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:40:25,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:40:25,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:40:25,047 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:40:25,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:40:25,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:40:25,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:40:25,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:40:25,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:40:25,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:40:25,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:40:25,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:40:25,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:40:25,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:40:25,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:40:25,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:40:25,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:40:25,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:40:25,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:40:25,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:40:25,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:40:25,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:40:25,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:40:25,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:40:25,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:40:25,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:40:25,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:40:25,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:40:25,052 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:40:25,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:40:25,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:40:25,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:40:25,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:40:25,547 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:40:25,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 22:40:25,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32736eb9f/70b13ec1d9674550b0e0938d4dfa00b2/FLAG1acff9ab4 [2020-09-24 22:40:26,170 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:40:26,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 22:40:26,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32736eb9f/70b13ec1d9674550b0e0938d4dfa00b2/FLAG1acff9ab4 [2020-09-24 22:40:26,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32736eb9f/70b13ec1d9674550b0e0938d4dfa00b2 [2020-09-24 22:40:26,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:40:26,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:40:26,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:40:26,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:40:26,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:40:26,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bccf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26, skipping insertion in model container [2020-09-24 22:40:26,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:40:26,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:40:26,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:40:26,840 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:40:26,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:40:26,870 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:40:26,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26 WrapperNode [2020-09-24 22:40:26,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:40:26,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:40:26,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:40:26,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:40:26,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (1/1) ... [2020-09-24 22:40:26,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:40:26,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:40:26,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:40:26,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:40:26,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (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 [2020-09-24 22:40:27,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:40:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:40:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:40:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:40:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:40:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:40:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:40:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:40:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:40:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:40:27,250 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:40:27,250 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:40:27,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:40:27 BoogieIcfgContainer [2020-09-24 22:40:27,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:40:27,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:40:27,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:40:27,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:40:27,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:40:26" (1/3) ... [2020-09-24 22:40:27,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da979b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:40:27, skipping insertion in model container [2020-09-24 22:40:27,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:26" (2/3) ... [2020-09-24 22:40:27,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da979b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:40:27, skipping insertion in model container [2020-09-24 22:40:27,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:40:27" (3/3) ... [2020-09-24 22:40:27,266 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-24 22:40:27,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:40:27,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:40:27,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:40:27,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:40:27,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:40:27,355 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:40:27,355 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:40:27,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:40:27,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:40:27,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:40:27,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:40:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:40:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:40:27,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:27,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:27,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:27,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:40:27,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:27,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50822790] [2020-09-24 22:40:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:27,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:27,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:40:27,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 22:40:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:40:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:40:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:27,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:27,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:27,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:27,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:40:27,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:40:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:40:27,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50822790] [2020-09-24 22:40:27,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:40:27,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:40:27,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375786336] [2020-09-24 22:40:27,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:40:27,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:40:27,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:40:27,939 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:40:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:28,027 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:40:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:28,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:40:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:28,043 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:40:28,043 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:40:28,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:40:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:40:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:40:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:40:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:40:28,108 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:40:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:28,108 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:40:28,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:40:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:40:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:40:28,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:28,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:28,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:40:28,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:28,112 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:40:28,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:28,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847163282] [2020-09-24 22:40:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:28,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:40:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 22:40:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:40:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:28,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:28,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:40:28,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:40:28,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847163282] [2020-09-24 22:40:28,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:40:28,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:40:28,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133659260] [2020-09-24 22:40:28,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:40:28,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:28,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:40:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:40:28,434 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:40:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:28,469 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:40:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:28,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:40:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:28,471 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:40:28,471 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:40:28,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:40:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:40:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:40:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:40:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:40:28,480 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:40:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:28,481 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:40:28,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:40:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:40:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:40:28,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:28,483 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:28,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:40:28,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:28,484 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:40:28,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:28,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417531528] [2020-09-24 22:40:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:40:30,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-09-24 22:40:30,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:40:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:40:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:30,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:30,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:40:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 22:40:30,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:40:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:30,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:40:30,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:40:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:30,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:30,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:40:30,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:40:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:40:30,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417531528] [2020-09-24 22:40:30,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:30,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:40:30,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129061223] [2020-09-24 22:40:30,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:40:30,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:40:30,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:40:30,785 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-24 22:40:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:30,909 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:40:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:30,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:40:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:30,911 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:40:30,912 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:40:30,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:40:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:40:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:40:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:40:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:40:30,921 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:40:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:30,922 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:40:30,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:40:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:40:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:40:30,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:30,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:30,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:40:30,925 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:40:30,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:30,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597822636] [2020-09-24 22:40:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:31,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:40:31,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:31,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-24 22:40:31,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:40:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:40:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:31,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:31,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:31,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:32,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 22:40:32,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:40:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:40:32,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:32,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:32,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:40:32,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:32,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:32,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:32,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:40:32,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:40:32,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597822636] [2020-09-24 22:40:32,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:32,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:40:32,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933611921] [2020-09-24 22:40:32,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:40:32,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:32,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:40:32,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:40:32,169 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-24 22:40:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:32,270 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-09-24 22:40:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:40:32,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 22:40:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:32,273 INFO L225 Difference]: With dead ends: 48 [2020-09-24 22:40:32,273 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:40:32,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:40:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:40:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-24 22:40:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 22:40:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-24 22:40:32,283 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-24 22:40:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:32,283 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-24 22:40:32,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:40:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-24 22:40:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:40:32,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:32,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:32,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:40:32,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:32,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:40:32,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:32,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046102945] [2020-09-24 22:40:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:33,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:40:33,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:40:33,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-09-24 22:40:33,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:40:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:40:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:33,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:33,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:33,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:40:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:34,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-24 22:40:34,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:34,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:34,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:40:34,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:34,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:34,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:40:34,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:34,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:34,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:40:34,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046102945] [2020-09-24 22:40:34,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:34,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:40:34,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507691672] [2020-09-24 22:40:34,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:40:34,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:34,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:40:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:34,563 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-24 22:40:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:34,813 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-09-24 22:40:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:40:34,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:40:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:34,816 INFO L225 Difference]: With dead ends: 79 [2020-09-24 22:40:34,816 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 22:40:34,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:40:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 22:40:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-24 22:40:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:40:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-09-24 22:40:34,837 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 35 [2020-09-24 22:40:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:34,838 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-09-24 22:40:34,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:40:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-09-24 22:40:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:40:34,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:34,842 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:34,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:40:34,842 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 22:40:34,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:34,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118489931] [2020-09-24 22:40:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:39,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:39,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:40:39,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:40:39,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:40:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:40:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:39,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:39,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:40,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 22:40:40,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:40:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 22:40:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:40:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 22:40:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:40:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:40:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:40,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:40:40,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:40,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:40,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:40:40,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:40:40,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:40,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 22:40:40,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118489931] [2020-09-24 22:40:40,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:40,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:40:40,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399145722] [2020-09-24 22:40:40,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:40:40,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:40:40,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:40:40,342 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 12 states. [2020-09-24 22:40:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:40,550 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2020-09-24 22:40:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:40:40,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 22:40:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:40,554 INFO L225 Difference]: With dead ends: 72 [2020-09-24 22:40:40,554 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 22:40:40,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:40:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 22:40:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2020-09-24 22:40:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 22:40:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2020-09-24 22:40:40,587 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 52 [2020-09-24 22:40:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:40,588 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2020-09-24 22:40:40,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:40:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2020-09-24 22:40:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:40:40,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:40,599 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:40,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:40:40,600 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-24 22:40:40,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:40,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363447165] [2020-09-24 22:40:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:45,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:40:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:40:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 22:40:45,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:40:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:45,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:45,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:45,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:45,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:40:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:40:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:40:50,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:40:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:50,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 22:40:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:50,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:40:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:50,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:50,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:50,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:40:50,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:54,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3217 [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:40:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:54,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:54,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:54,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:54,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:54,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:54,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:54,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:40:54,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:54,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:54,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 82 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-24 22:40:54,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363447165] [2020-09-24 22:40:54,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:54,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:40:54,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182886617] [2020-09-24 22:40:54,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:40:54,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:54,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:40:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:40:54,361 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 10 states. [2020-09-24 22:40:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:54,585 INFO L93 Difference]: Finished difference Result 150 states and 239 transitions. [2020-09-24 22:40:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:40:54,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-24 22:40:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:54,590 INFO L225 Difference]: With dead ends: 150 [2020-09-24 22:40:54,590 INFO L226 Difference]: Without dead ends: 100 [2020-09-24 22:40:54,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:40:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-24 22:40:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2020-09-24 22:40:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 22:40:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2020-09-24 22:40:54,608 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 87 [2020-09-24 22:40:54,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:54,609 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2020-09-24 22:40:54,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:40:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2020-09-24 22:40:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:40:54,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:54,611 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:54,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:40:54,612 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:54,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1742794134, now seen corresponding path program 4 times [2020-09-24 22:40:54,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:54,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8855576] [2020-09-24 22:40:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:55,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:40:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:59,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:59,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:59,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:04,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:04,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:41:04,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:41:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:41:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 22:41:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:41:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:41:05,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:41:05,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-09-24 22:41:05,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:41:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:41:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:41:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 22:41:06,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:41:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:06,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:41:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:41:06,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:41:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:41:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:06,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:41:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:41:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:41:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:41:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 22:41:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:06,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:41:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:41:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 22:41:06,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8855576] [2020-09-24 22:41:06,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:06,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:41:06,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045281757] [2020-09-24 22:41:06,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:41:06,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:06,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:41:06,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:41:06,177 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand 9 states. [2020-09-24 22:41:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:06,298 INFO L93 Difference]: Finished difference Result 146 states and 223 transitions. [2020-09-24 22:41:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:41:06,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 22:41:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:06,301 INFO L225 Difference]: With dead ends: 146 [2020-09-24 22:41:06,301 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 22:41:06,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:41:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 22:41:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-24 22:41:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:41:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-24 22:41:06,311 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 69 [2020-09-24 22:41:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:06,312 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-24 22:41:06,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:41:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-24 22:41:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:41:06,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:06,313 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:41:06,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:41:06,314 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 5 times [2020-09-24 22:41:06,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:06,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070178951] [2020-09-24 22:41:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:11,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 22:41:11,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:41:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:41:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:41:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:41:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:11,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:11,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:11,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:41:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:14,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:41:14,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:41:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2849 [2020-09-24 22:41:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:41:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:41:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:41:18,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:41:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3793 [2020-09-24 22:41:18,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:41:18,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:41:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:41:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:18,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:18,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:18,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:18,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:41:18,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:41:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:41:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:18,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:41:18,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 69 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-24 22:41:18,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070178951] [2020-09-24 22:41:18,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:18,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:41:18,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518946771] [2020-09-24 22:41:18,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:41:18,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:18,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:41:18,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:41:18,195 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 9 states. [2020-09-24 22:41:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:18,355 INFO L93 Difference]: Finished difference Result 118 states and 155 transitions. [2020-09-24 22:41:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:41:18,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 22:41:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:18,358 INFO L225 Difference]: With dead ends: 118 [2020-09-24 22:41:18,358 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 22:41:18,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:41:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 22:41:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-24 22:41:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 22:41:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2020-09-24 22:41:18,384 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 70 [2020-09-24 22:41:18,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:18,386 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2020-09-24 22:41:18,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:41:18,386 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2020-09-24 22:41:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:41:18,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:18,394 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:41:18,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:41:18,395 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 6 times [2020-09-24 22:41:18,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:18,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448932393] [2020-09-24 22:41:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking...