/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=LOWLEXORDER --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_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:32:01,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:32:01,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:32:02,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:32:02,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:32:02,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:32:02,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:32:02,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:32:02,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:32:02,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:32:02,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:32:02,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:32:02,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:32:02,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:32:02,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:32:02,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:32:02,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:32:02,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:32:02,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:32:02,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:32:02,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:32:02,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:32:02,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:32:02,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:32:02,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:32:02,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:32:02,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:32:02,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:32:02,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:32:02,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:32:02,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:32:02,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:32:02,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:32:02,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:32:02,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:32:02,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:32:02,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:32:02,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:32:02,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:32:02,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:32:02,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:32:02,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:32:02,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:32:02,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:32:02,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:32:02,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:32:02,158 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:32:02,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:32:02,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:32:02,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:32:02,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:32:02,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:32:02,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:32:02,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:32:02,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:32:02,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:32:02,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:32:02,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:32:02,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:32:02,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:32:02,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:32:02,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:32:02,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:32:02,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:02,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:32:02,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:32:02,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:32:02,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:32:02,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:32:02,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:32:02,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:32:02,163 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:32:02,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:32:02,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:32:02,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:32:02,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:32:02,647 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:32:02,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-24 21:32:02,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b74214814/57b9ea42937f42628728da285ee1a6bc/FLAG174fe842a [2020-09-24 21:32:03,275 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:32:03,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-24 21:32:03,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b74214814/57b9ea42937f42628728da285ee1a6bc/FLAG174fe842a [2020-09-24 21:32:03,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b74214814/57b9ea42937f42628728da285ee1a6bc [2020-09-24 21:32:03,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:32:03,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:32:03,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:03,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:32:03,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:32:03,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03, skipping insertion in model container [2020-09-24 21:32:03,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:32:03,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:32:03,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:03,914 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:32:03,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:03,955 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:32:03,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03 WrapperNode [2020-09-24 21:32:03,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:03,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:32:03,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:32:03,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:32:03,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... [2020-09-24 21:32:03,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:32:03,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:32:03,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:32:03,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:32:03,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:32:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:32:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:32:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:32:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:32:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:32:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:32:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:32:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:32:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:32:04,433 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:32:04,437 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:32:04,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:04 BoogieIcfgContainer [2020-09-24 21:32:04,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:32:04,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:32:04,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:32:04,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:32:04,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:32:03" (1/3) ... [2020-09-24 21:32:04,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fa513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:04, skipping insertion in model container [2020-09-24 21:32:04,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:03" (2/3) ... [2020-09-24 21:32:04,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fa513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:04, skipping insertion in model container [2020-09-24 21:32:04,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:04" (3/3) ... [2020-09-24 21:32:04,477 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2020-09-24 21:32:04,506 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:32:04,525 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:32:04,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:32:04,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:32:04,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:32:04,584 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:32:04,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:32:04,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:32:04,584 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:32:04,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:32:04,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:32:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:32:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:32:04,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:04,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:04,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:32:04,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:04,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610968148] [2020-09-24 21:32:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:32:04,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-24 21:32:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:32:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:32:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:05,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:32:05,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:05,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:05,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610968148] [2020-09-24 21:32:05,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:05,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:05,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221957708] [2020-09-24 21:32:05,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:05,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:05,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:05,139 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:32:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:05,256 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:32:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:05,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:32:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:05,271 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:05,271 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:32:05,275 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 [2020-09-24 21:32:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:32:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:32:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:05,326 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:32:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:05,327 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:05,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:32:05,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:05,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:05,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:05,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:32:05,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:05,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128123600] [2020-09-24 21:32:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 21:32:05,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:05,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:32:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:05,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128123600] [2020-09-24 21:32:05,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:05,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:05,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293883227] [2020-09-24 21:32:05,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:05,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:05,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:05,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:05,627 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:32:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:05,701 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:32:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:05,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:05,704 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:32:05,704 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:32:05,705 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 [2020-09-24 21:32:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:32:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:32:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:05,720 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:32:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:05,721 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:05,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:05,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:05,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:05,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:05,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:32:05,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:05,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366473696] [2020-09-24 21:32:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:07,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-09-24 21:32:07,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:07,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:07,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:07,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:07,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 21:32:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:07,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:32:07,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:08,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:08,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:08,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:08,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366473696] [2020-09-24 21:32:08,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:08,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:08,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077847461] [2020-09-24 21:32:08,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:08,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:08,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:08,066 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:32:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:08,289 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:32:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:08,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:08,294 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:08,295 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:32:08,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:32:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:32:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:32:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:32:08,323 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:32:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:08,325 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:32:08,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:32:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:08,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:08,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:08,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:08,331 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:08,332 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:32:08,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:08,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591706054] [2020-09-24 21:32:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:10,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:32:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1856 [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:10,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:10,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:10,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-24 21:32:10,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:10,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:10,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:32:10,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:10,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:10,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:32:10,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591706054] [2020-09-24 21:32:10,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:10,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:32:10,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478484086] [2020-09-24 21:32:10,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:32:10,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:10,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:32:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:10,820 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-24 21:32:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:10,975 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-24 21:32:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:10,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 21:32:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:10,982 INFO L225 Difference]: With dead ends: 58 [2020-09-24 21:32:10,982 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 21:32:10,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:32:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 21:32:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-09-24 21:32:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 21:32:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-09-24 21:32:11,006 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 35 [2020-09-24 21:32:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:11,007 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-09-24 21:32:11,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:32:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-09-24 21:32:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:11,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:11,012 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] [2020-09-24 21:32:11,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:11,012 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:11,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:11,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:32:11,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:11,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986156954] [2020-09-24 21:32:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:16,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:32:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:32:16,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:16,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:16,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:16,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:16,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:19,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3375 [2020-09-24 21:32:19,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:19,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:32:19,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:19,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:19,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:19,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:19,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:32:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 21:32:19,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986156954] [2020-09-24 21:32:19,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:19,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:19,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293964310] [2020-09-24 21:32:19,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:19,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:19,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:19,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:19,680 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 7 states. [2020-09-24 21:32:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:19,850 INFO L93 Difference]: Finished difference Result 60 states and 86 transitions. [2020-09-24 21:32:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:19,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-24 21:32:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:19,854 INFO L225 Difference]: With dead ends: 60 [2020-09-24 21:32:19,854 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 21:32:19,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 21:32:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-09-24 21:32:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 21:32:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 21:32:19,883 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 51 [2020-09-24 21:32:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:19,884 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 21:32:19,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 21:32:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:32:19,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:19,887 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:19,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:19,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 21:32:19,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:19,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377468916] [2020-09-24 21:32:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:24,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:32:24,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:32:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:24,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:24,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:26,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1568 [2020-09-24 21:32:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:26,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:32:26,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:26,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:26,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:26,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:26,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:26,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 21:32:26,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377468916] [2020-09-24 21:32:26,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:26,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:26,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465279920] [2020-09-24 21:32:26,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:26,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:26,872 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 7 states. [2020-09-24 21:32:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:26,977 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2020-09-24 21:32:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:26,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 21:32:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:26,980 INFO L225 Difference]: With dead ends: 68 [2020-09-24 21:32:26,980 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 21:32:26,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 21:32:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2020-09-24 21:32:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 21:32:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 21:32:26,994 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 52 [2020-09-24 21:32:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:26,994 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 21:32:26,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 21:32:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 21:32:26,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:26,999 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:26,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:27,000 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash -319775240, now seen corresponding path program 2 times [2020-09-24 21:32:27,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:27,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949766818] [2020-09-24 21:32:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-24 21:32:32,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 21:32:32,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:32:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:32,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:32,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:37,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-24 21:32:37,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:32:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 21:32:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:32:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1666 [2020-09-24 21:32:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:39,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 21:32:39,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:39,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:39,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:39,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:39,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:39,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:39,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:39,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:32:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:32:40,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-09-24 21:32:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 21:32:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:40,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:40,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:40,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:40,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:40,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 68 proven. 130 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-09-24 21:32:40,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949766818] [2020-09-24 21:32:40,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:40,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:32:40,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665938977] [2020-09-24 21:32:40,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:32:40,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:40,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:32:40,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:32:40,726 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 15 states. [2020-09-24 21:32:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:41,338 INFO L93 Difference]: Finished difference Result 110 states and 159 transitions. [2020-09-24 21:32:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:32:41,338 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 101 [2020-09-24 21:32:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:41,346 INFO L225 Difference]: With dead ends: 110 [2020-09-24 21:32:41,346 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 21:32:41,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:32:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 21:32:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-09-24 21:32:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 21:32:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-09-24 21:32:41,381 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 101 [2020-09-24 21:32:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:41,382 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-09-24 21:32:41,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:32:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-09-24 21:32:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:32:41,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:41,386 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] [2020-09-24 21:32:41,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:41,389 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 21:32:41,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:41,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523568006] [2020-09-24 21:32:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:32:46,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 21:32:46,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:32:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:46,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:46,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:46,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:51,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 21:32:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:51,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking...