/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=WIDEST --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_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:09:15,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:09:15,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:09:15,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:09:15,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:09:15,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:09:15,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:09:15,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:09:15,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:09:15,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:09:15,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:09:16,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:09:16,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:09:16,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:09:16,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:09:16,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:09:16,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:09:16,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:09:16,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:09:16,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:09:16,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:09:16,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:09:16,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:09:16,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:09:16,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:09:16,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:09:16,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:09:16,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:09:16,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:09:16,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:09:16,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:09:16,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:09:16,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:09:16,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:09:16,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:09:16,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:09:16,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:09:16,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:09:16,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:09:16,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:09:16,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:09:16,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:09:16,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:09:16,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:09:16,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:09:16,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:09:16,125 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:09:16,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:09:16,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:09:16,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:09:16,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:09:16,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:09:16,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:09:16,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:09:16,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:09:16,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:09:16,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:09:16,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:09:16,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:09:16,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:09:16,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:09:16,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:09:16,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:09:16,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:16,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:09:16,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:09:16,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:09:16,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:09:16,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:09:16,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:09:16,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:09:16,132 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:09:16,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:09:16,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:09:16,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:09:16,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:09:16,687 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:09:16,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 03:09:16,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfbf888c/0d23e31b7b804bfc962bf9036f53691d/FLAG609d77119 [2020-09-25 03:09:17,363 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:09:17,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 03:09:17,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfbf888c/0d23e31b7b804bfc962bf9036f53691d/FLAG609d77119 [2020-09-25 03:09:17,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dfbf888c/0d23e31b7b804bfc962bf9036f53691d [2020-09-25 03:09:17,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:09:17,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:09:17,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:17,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:09:17,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:09:17,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6c8a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17, skipping insertion in model container [2020-09-25 03:09:17,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:09:17,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:09:17,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:17,997 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:09:18,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:18,037 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:09:18,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18 WrapperNode [2020-09-25 03:09:18,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:18,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:09:18,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:09:18,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:09:18,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... [2020-09-25 03:09:18,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:09:18,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:09:18,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:09:18,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:09:18,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:09:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:09:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:09:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:09:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:09:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:09:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:09:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:09:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:09:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:09:18,455 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:09:18,456 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:09:18,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:18 BoogieIcfgContainer [2020-09-25 03:09:18,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:09:18,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:09:18,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:09:18,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:09:18,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:09:17" (1/3) ... [2020-09-25 03:09:18,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f8f058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:18, skipping insertion in model container [2020-09-25 03:09:18,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:18" (2/3) ... [2020-09-25 03:09:18,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f8f058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:18, skipping insertion in model container [2020-09-25 03:09:18,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:18" (3/3) ... [2020-09-25 03:09:18,473 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-25 03:09:18,485 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:09:18,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:09:18,540 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:09:18,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:09:18,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:09:18,592 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:09:18,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:09:18,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:09:18,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:09:18,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:09:18,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:09:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:09:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:09:18,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:18,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:18,632 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:18,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:09:18,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:18,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276729176] [2020-09-25 03:09:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:18,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 03:09:18,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:18,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:09:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:18,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:18,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:18,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:09:18,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:18,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276729176] [2020-09-25 03:09:18,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:18,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:18,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247651785] [2020-09-25 03:09:18,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:18,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:18,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:18,998 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:09:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:19,126 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:09:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:09:19,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:09:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:19,142 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:09:19,142 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:09:19,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:09:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:09:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:19,204 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:09:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:19,205 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:19,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:09:19,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:19,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:19,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:09:19,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:19,209 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:09:19,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:19,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537356747] [2020-09-25 03:09:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 03:09:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:19,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:09:19,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:19,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:09:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 03:09:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:19,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537356747] [2020-09-25 03:09:19,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:19,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:19,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743066364] [2020-09-25 03:09:19,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:19,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:19,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:19,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:19,502 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:09:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:19,599 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:09:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:09:19,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:09:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:19,602 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:09:19,602 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:09:19,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:09:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:09:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:19,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:09:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:19,613 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:19,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:09:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:19,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:19,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:19,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:19,619 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:09:19,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:19,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962645992] [2020-09-25 03:09:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:20,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-25 03:09:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:09:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:09:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:20,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:20,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:20,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 03:09:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:09:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:20,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:20,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962645992] [2020-09-25 03:09:20,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:20,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:20,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307859748] [2020-09-25 03:09:20,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:20,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:20,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:20,696 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:09:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:20,812 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 03:09:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:20,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:09:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:20,819 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:20,820 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 03:09:20,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 03:09:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 03:09:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:09:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 03:09:20,844 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 03:09:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:20,845 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 03:09:20,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 03:09:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:20,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:20,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:20,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:20,850 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:20,851 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 03:09:20,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:20,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66451529] [2020-09-25 03:09:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:21,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 03:09:21,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:21,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:21,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:21,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 03:09:21,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:21,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:21,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:21,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:21,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66451529] [2020-09-25 03:09:21,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:21,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:21,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747604375] [2020-09-25 03:09:21,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:21,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:21,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:21,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:21,727 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 03:09:21,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:21,815 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 03:09:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:21,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 03:09:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:21,818 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:09:21,818 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:09:21,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:09:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 03:09:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:09:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 03:09:21,829 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 03:09:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:21,830 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 03:09:21,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 03:09:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:21,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:21,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:21,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:21,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:09:21,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:21,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099613] [2020-09-25 03:09:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:09:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 03:09:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:22,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-25 03:09:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:22,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 03:09:22,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:22,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:22,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099613] [2020-09-25 03:09:22,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:22,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:22,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830125721] [2020-09-25 03:09:22,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:22,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:22,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:22,987 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 03:09:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:23,145 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 03:09:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:23,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:09:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:23,150 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:09:23,150 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:09:23,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:09:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 03:09:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:09:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 03:09:23,167 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 03:09:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:23,168 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 03:09:23,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 03:09:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:09:23,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:23,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:23,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:23,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 03:09:23,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:23,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812662521] [2020-09-25 03:09:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:09:28,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:09:28,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:09:28,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:28,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:09:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:33,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:33,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 03:09:33,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:33,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:33,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:33,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:33,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:09:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:09:33,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812662521] [2020-09-25 03:09:33,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:33,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:09:33,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803223891] [2020-09-25 03:09:33,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:33,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:33,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:33,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:33,598 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 9 states. [2020-09-25 03:09:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:33,739 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-09-25 03:09:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:09:33,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 03:09:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:33,747 INFO L225 Difference]: With dead ends: 88 [2020-09-25 03:09:33,750 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 03:09:33,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 03:09:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-09-25 03:09:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:09:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-09-25 03:09:33,770 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 51 [2020-09-25 03:09:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:33,770 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-09-25 03:09:33,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-09-25 03:09:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:09:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:33,774 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:33,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:33,775 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 3 times [2020-09-25 03:09:33,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:33,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605660047] [2020-09-25 03:09:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 03:09:38,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:09:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 03:09:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:09:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 03:09:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:09:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:38,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:09:43,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 03:09:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:09:43,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 03:09:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 03:09:44,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:44,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:44,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2104 [2020-09-25 03:09:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:46,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:09:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:46,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 03:09:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:46,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:46,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:09:46,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:46,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:09:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 90 proven. 67 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 03:09:46,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605660047] [2020-09-25 03:09:46,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:46,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:09:46,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222103276] [2020-09-25 03:09:46,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:09:46,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:09:46,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:46,757 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 11 states. [2020-09-25 03:09:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:47,099 INFO L93 Difference]: Finished difference Result 151 states and 247 transitions. [2020-09-25 03:09:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:09:47,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-25 03:09:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:47,101 INFO L225 Difference]: With dead ends: 151 [2020-09-25 03:09:47,101 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 03:09:47,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:09:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 03:09:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2020-09-25 03:09:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 03:09:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2020-09-25 03:09:47,113 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 87 [2020-09-25 03:09:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:47,113 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2020-09-25 03:09:47,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:09:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2020-09-25 03:09:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 03:09:47,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:47,116 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:47,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:47,116 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 03:09:47,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:47,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944681099] [2020-09-25 03:09:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 03:09:52,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:09:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:09:52,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:09:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:09:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:09:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:52,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:52,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 03:09:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:09:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 03:09:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:57,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:58,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-09-25 03:09:58,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:58,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:09:58,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:58,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:58,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:58,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:58,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:09:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 03:09:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:10:03,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 03:10:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:03,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:10:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:05,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-09-25 03:10:05,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:10:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:05,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:05,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:05,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:05,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:10:05,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 03:10:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:05,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 187 proven. 109 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 03:10:05,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944681099] [2020-09-25 03:10:05,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:05,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:10:05,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796662548] [2020-09-25 03:10:05,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:10:05,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:05,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:10:05,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:05,557 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand 11 states. [2020-09-25 03:10:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:05,920 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2020-09-25 03:10:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:10:05,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-25 03:10:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:05,924 INFO L225 Difference]: With dead ends: 127 [2020-09-25 03:10:05,924 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 03:10:05,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:10:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 03:10:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-09-25 03:10:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:10:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-09-25 03:10:05,934 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 123 [2020-09-25 03:10:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:05,935 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-09-25 03:10:05,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:10:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-09-25 03:10:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:10:05,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:05,937 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:05,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:05,937 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 03:10:05,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:05,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662406499] [2020-09-25 03:10:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking...