/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:38:22,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:38:22,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:38:22,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:38:22,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:38:22,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:38:22,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:38:22,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:38:22,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:38:22,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:38:22,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:38:22,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:38:22,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:38:23,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:38:23,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:38:23,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:38:23,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:38:23,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:38:23,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:38:23,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:38:23,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:38:23,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:38:23,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:38:23,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:38:23,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:38:23,075 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:38:23,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:38:23,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:38:23,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:38:23,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:38:23,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:38:23,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:38:23,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:38:23,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:38:23,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:38:23,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:38:23,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:38:23,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:38:23,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:38:23,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:38:23,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:38:23,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:38:23,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:38:23,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:38:23,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:38:23,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:38:23,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:38:23,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:38:23,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:38:23,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:38:23,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:38:23,511 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:38:23,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:23,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652a62829/835a5f142ff04c6d8c219ccc66b27761/FLAG44789b9d6 [2020-12-22 07:38:24,218 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:38:24,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:24,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652a62829/835a5f142ff04c6d8c219ccc66b27761/FLAG44789b9d6 [2020-12-22 07:38:24,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652a62829/835a5f142ff04c6d8c219ccc66b27761 [2020-12-22 07:38:24,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:38:24,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:38:24,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:24,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:38:24,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:38:24,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:24" (1/1) ... [2020-12-22 07:38:24,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cdfdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:24, skipping insertion in model container [2020-12-22 07:38:24,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:24" (1/1) ... [2020-12-22 07:38:24,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:38:24,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:38:24,950 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c[26481,26494] [2020-12-22 07:38:24,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:24,985 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:38:25,097 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c[26481,26494] [2020-12-22 07:38:25,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:25,123 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:38:25,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25 WrapperNode [2020-12-22 07:38:25,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:25,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:25,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:38:25,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:38:25,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:25,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:38:25,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:38:25,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:38:25,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... [2020-12-22 07:38:25,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:38:25,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:38:25,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:38:25,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:38:25,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 07:38:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:38:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:38:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:38:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:38:26,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:38:26,244 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 07:38:26,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:26 BoogieIcfgContainer [2020-12-22 07:38:26,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:38:26,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:38:26,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:38:26,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:38:26,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:38:24" (1/3) ... [2020-12-22 07:38:26,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e72b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:26, skipping insertion in model container [2020-12-22 07:38:26,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:25" (2/3) ... [2020-12-22 07:38:26,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e72b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:26, skipping insertion in model container [2020-12-22 07:38:26,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:26" (3/3) ... [2020-12-22 07:38:26,264 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:26,276 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:38:26,282 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:38:26,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:38:26,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:38:26,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:38:26,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:38:26,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:38:26,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:38:26,332 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:38:26,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:38:26,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:38:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-12-22 07:38:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:26,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:26,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:26,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:26,370 INFO L82 PathProgramCache]: Analyzing trace with hash 118130595, now seen corresponding path program 1 times [2020-12-22 07:38:26,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:26,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411839460] [2020-12-22 07:38:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:26,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411839460] [2020-12-22 07:38:26,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:26,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:38:26,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208295040] [2020-12-22 07:38:26,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:38:26,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:26,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:38:26,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:26,706 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 2 states. [2020-12-22 07:38:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:26,741 INFO L93 Difference]: Finished difference Result 226 states and 385 transitions. [2020-12-22 07:38:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:38:26,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-12-22 07:38:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:26,757 INFO L225 Difference]: With dead ends: 226 [2020-12-22 07:38:26,757 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 07:38:26,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 07:38:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-12-22 07:38:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-22 07:38:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 251 transitions. [2020-12-22 07:38:26,817 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 251 transitions. Word has length 45 [2020-12-22 07:38:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:26,818 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 251 transitions. [2020-12-22 07:38:26,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:38:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 251 transitions. [2020-12-22 07:38:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:26,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:26,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:26,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:38:26,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:26,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1253676703, now seen corresponding path program 1 times [2020-12-22 07:38:26,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:26,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348756740] [2020-12-22 07:38:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:27,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348756740] [2020-12-22 07:38:27,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:27,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:27,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630183810] [2020-12-22 07:38:27,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:38:27,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:27,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:38:27,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:38:27,014 INFO L87 Difference]: Start difference. First operand 144 states and 251 transitions. Second operand 5 states. [2020-12-22 07:38:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:27,172 INFO L93 Difference]: Finished difference Result 225 states and 378 transitions. [2020-12-22 07:38:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:38:27,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 07:38:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:27,175 INFO L225 Difference]: With dead ends: 225 [2020-12-22 07:38:27,175 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 07:38:27,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:38:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 07:38:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-12-22 07:38:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-22 07:38:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 190 transitions. [2020-12-22 07:38:27,188 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 190 transitions. Word has length 45 [2020-12-22 07:38:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:27,188 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 190 transitions. [2020-12-22 07:38:27,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:38:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 190 transitions. [2020-12-22 07:38:27,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:27,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:27,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:27,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:38:27,194 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:27,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:27,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1781682001, now seen corresponding path program 1 times [2020-12-22 07:38:27,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:27,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013131124] [2020-12-22 07:38:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:27,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013131124] [2020-12-22 07:38:27,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:27,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:27,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182398929] [2020-12-22 07:38:27,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:27,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:27,489 INFO L87 Difference]: Start difference. First operand 144 states and 190 transitions. Second operand 3 states. [2020-12-22 07:38:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:27,516 INFO L93 Difference]: Finished difference Result 292 states and 426 transitions. [2020-12-22 07:38:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:27,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:27,519 INFO L225 Difference]: With dead ends: 292 [2020-12-22 07:38:27,519 INFO L226 Difference]: Without dead ends: 215 [2020-12-22 07:38:27,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-12-22 07:38:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-12-22 07:38:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-22 07:38:27,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 301 transitions. [2020-12-22 07:38:27,540 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 301 transitions. Word has length 105 [2020-12-22 07:38:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:27,540 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 301 transitions. [2020-12-22 07:38:27,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 301 transitions. [2020-12-22 07:38:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:27,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:27,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:27,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:38:27,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1036099271, now seen corresponding path program 1 times [2020-12-22 07:38:27,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:27,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23828981] [2020-12-22 07:38:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:27,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23828981] [2020-12-22 07:38:27,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:27,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:27,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698423501] [2020-12-22 07:38:27,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:27,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:27,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:27,711 INFO L87 Difference]: Start difference. First operand 213 states and 301 transitions. Second operand 3 states. [2020-12-22 07:38:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:27,761 INFO L93 Difference]: Finished difference Result 493 states and 749 transitions. [2020-12-22 07:38:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:27,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:27,768 INFO L225 Difference]: With dead ends: 493 [2020-12-22 07:38:27,769 INFO L226 Difference]: Without dead ends: 347 [2020-12-22 07:38:27,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-22 07:38:27,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2020-12-22 07:38:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-12-22 07:38:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 512 transitions. [2020-12-22 07:38:27,813 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 512 transitions. Word has length 105 [2020-12-22 07:38:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:27,815 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 512 transitions. [2020-12-22 07:38:27,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 512 transitions. [2020-12-22 07:38:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:27,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:27,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:27,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:38:27,824 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:27,824 INFO L82 PathProgramCache]: Analyzing trace with hash -903931587, now seen corresponding path program 1 times [2020-12-22 07:38:27,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:27,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841635000] [2020-12-22 07:38:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:27,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841635000] [2020-12-22 07:38:27,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:27,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:27,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135373452] [2020-12-22 07:38:27,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:27,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:27,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:27,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:27,960 INFO L87 Difference]: Start difference. First operand 345 states and 512 transitions. Second operand 3 states. [2020-12-22 07:38:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:28,023 INFO L93 Difference]: Finished difference Result 877 states and 1362 transitions. [2020-12-22 07:38:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:28,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:28,030 INFO L225 Difference]: With dead ends: 877 [2020-12-22 07:38:28,031 INFO L226 Difference]: Without dead ends: 599 [2020-12-22 07:38:28,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-22 07:38:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-22 07:38:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-22 07:38:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 912 transitions. [2020-12-22 07:38:28,074 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 912 transitions. Word has length 105 [2020-12-22 07:38:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:28,077 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 912 transitions. [2020-12-22 07:38:28,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 912 transitions. [2020-12-22 07:38:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:28,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:28,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:28,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:38:28,081 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:28,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1796751027, now seen corresponding path program 1 times [2020-12-22 07:38:28,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:28,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832645176] [2020-12-22 07:38:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:28,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832645176] [2020-12-22 07:38:28,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:28,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:28,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024505329] [2020-12-22 07:38:28,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:28,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:28,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:28,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:28,240 INFO L87 Difference]: Start difference. First operand 597 states and 912 transitions. Second operand 3 states. [2020-12-22 07:38:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:28,279 INFO L93 Difference]: Finished difference Result 1609 states and 2522 transitions. [2020-12-22 07:38:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:28,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:28,288 INFO L225 Difference]: With dead ends: 1609 [2020-12-22 07:38:28,288 INFO L226 Difference]: Without dead ends: 1079 [2020-12-22 07:38:28,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-12-22 07:38:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2020-12-22 07:38:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-12-22 07:38:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1668 transitions. [2020-12-22 07:38:28,330 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1668 transitions. Word has length 105 [2020-12-22 07:38:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:28,330 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1668 transitions. [2020-12-22 07:38:28,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1668 transitions. [2020-12-22 07:38:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:28,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:28,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:28,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:38:28,333 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:28,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2134544169, now seen corresponding path program 1 times [2020-12-22 07:38:28,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:28,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201150026] [2020-12-22 07:38:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:28,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201150026] [2020-12-22 07:38:28,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:28,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:28,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596525737] [2020-12-22 07:38:28,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:28,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:28,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:28,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:28,505 INFO L87 Difference]: Start difference. First operand 1077 states and 1668 transitions. Second operand 3 states. [2020-12-22 07:38:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:28,577 INFO L93 Difference]: Finished difference Result 3001 states and 4710 transitions. [2020-12-22 07:38:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:28,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:28,591 INFO L225 Difference]: With dead ends: 3001 [2020-12-22 07:38:28,591 INFO L226 Difference]: Without dead ends: 1991 [2020-12-22 07:38:28,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-12-22 07:38:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1989. [2020-12-22 07:38:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2020-12-22 07:38:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 3092 transitions. [2020-12-22 07:38:28,683 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 3092 transitions. Word has length 105 [2020-12-22 07:38:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:28,684 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 3092 transitions. [2020-12-22 07:38:28,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 3092 transitions. [2020-12-22 07:38:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:28,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:28,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:28,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:38:28,689 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:28,691 INFO L82 PathProgramCache]: Analyzing trace with hash -942437729, now seen corresponding path program 1 times [2020-12-22 07:38:28,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:28,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483932563] [2020-12-22 07:38:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:28,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483932563] [2020-12-22 07:38:28,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:28,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:28,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479272380] [2020-12-22 07:38:28,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:28,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:28,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:28,993 INFO L87 Difference]: Start difference. First operand 1989 states and 3092 transitions. Second operand 10 states. [2020-12-22 07:38:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:30,908 INFO L93 Difference]: Finished difference Result 32741 states and 51492 transitions. [2020-12-22 07:38:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:38:30,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-12-22 07:38:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:31,039 INFO L225 Difference]: With dead ends: 32741 [2020-12-22 07:38:31,040 INFO L226 Difference]: Without dead ends: 30819 [2020-12-22 07:38:31,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:38:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30819 states. [2020-12-22 07:38:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30819 to 3909. [2020-12-22 07:38:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2020-12-22 07:38:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 6052 transitions. [2020-12-22 07:38:31,571 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 6052 transitions. Word has length 105 [2020-12-22 07:38:31,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:31,571 INFO L481 AbstractCegarLoop]: Abstraction has 3909 states and 6052 transitions. [2020-12-22 07:38:31,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:38:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 6052 transitions. [2020-12-22 07:38:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:31,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:31,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:31,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:38:31,574 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:31,574 INFO L82 PathProgramCache]: Analyzing trace with hash -860244721, now seen corresponding path program 1 times [2020-12-22 07:38:31,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:31,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557270367] [2020-12-22 07:38:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:31,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557270367] [2020-12-22 07:38:31,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:31,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:31,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178260649] [2020-12-22 07:38:31,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:31,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:31,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:31,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:31,681 INFO L87 Difference]: Start difference. First operand 3909 states and 6052 transitions. Second operand 3 states. [2020-12-22 07:38:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:32,301 INFO L93 Difference]: Finished difference Result 11241 states and 17414 transitions. [2020-12-22 07:38:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:32,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:32,321 INFO L225 Difference]: With dead ends: 11241 [2020-12-22 07:38:32,321 INFO L226 Difference]: Without dead ends: 7399 [2020-12-22 07:38:32,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2020-12-22 07:38:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 7333. [2020-12-22 07:38:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7333 states. [2020-12-22 07:38:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 11204 transitions. [2020-12-22 07:38:32,911 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 11204 transitions. Word has length 107 [2020-12-22 07:38:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:32,912 INFO L481 AbstractCegarLoop]: Abstraction has 7333 states and 11204 transitions. [2020-12-22 07:38:32,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 11204 transitions. [2020-12-22 07:38:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:32,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:32,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:32,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:38:32,914 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:32,914 INFO L82 PathProgramCache]: Analyzing trace with hash -793751209, now seen corresponding path program 1 times [2020-12-22 07:38:32,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:32,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967229985] [2020-12-22 07:38:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:33,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967229985] [2020-12-22 07:38:33,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:33,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:33,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782190614] [2020-12-22 07:38:33,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:33,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:33,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:33,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:33,429 INFO L87 Difference]: Start difference. First operand 7333 states and 11204 transitions. Second operand 10 states. [2020-12-22 07:38:34,022 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-12-22 07:38:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:35,040 INFO L93 Difference]: Finished difference Result 18219 states and 27943 transitions. [2020-12-22 07:38:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:38:35,042 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-12-22 07:38:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:35,067 INFO L225 Difference]: With dead ends: 18219 [2020-12-22 07:38:35,067 INFO L226 Difference]: Without dead ends: 10953 [2020-12-22 07:38:35,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:38:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10953 states. [2020-12-22 07:38:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10953 to 7333. [2020-12-22 07:38:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7333 states. [2020-12-22 07:38:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 11140 transitions. [2020-12-22 07:38:35,777 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 11140 transitions. Word has length 107 [2020-12-22 07:38:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:35,777 INFO L481 AbstractCegarLoop]: Abstraction has 7333 states and 11140 transitions. [2020-12-22 07:38:35,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:38:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 11140 transitions. [2020-12-22 07:38:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:35,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:35,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:35,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:38:35,780 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1539759597, now seen corresponding path program 1 times [2020-12-22 07:38:35,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:35,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59212213] [2020-12-22 07:38:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:35,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59212213] [2020-12-22 07:38:35,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:35,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:35,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858726237] [2020-12-22 07:38:35,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:35,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:35,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:35,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:35,888 INFO L87 Difference]: Start difference. First operand 7333 states and 11140 transitions. Second operand 3 states. [2020-12-22 07:38:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:36,924 INFO L93 Difference]: Finished difference Result 21097 states and 32006 transitions. [2020-12-22 07:38:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:36,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:36,957 INFO L225 Difference]: With dead ends: 21097 [2020-12-22 07:38:36,958 INFO L226 Difference]: Without dead ends: 13831 [2020-12-22 07:38:36,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2020-12-22 07:38:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 13829. [2020-12-22 07:38:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13829 states. [2020-12-22 07:38:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13829 states to 13829 states and 20804 transitions. [2020-12-22 07:38:38,036 INFO L78 Accepts]: Start accepts. Automaton has 13829 states and 20804 transitions. Word has length 107 [2020-12-22 07:38:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:38,036 INFO L481 AbstractCegarLoop]: Abstraction has 13829 states and 20804 transitions. [2020-12-22 07:38:38,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 13829 states and 20804 transitions. [2020-12-22 07:38:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:38,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:38,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:38:38,039 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1642858163, now seen corresponding path program 1 times [2020-12-22 07:38:38,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:38,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235511340] [2020-12-22 07:38:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:38,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235511340] [2020-12-22 07:38:38,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:38,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:38,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645656598] [2020-12-22 07:38:38,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:38,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:38,122 INFO L87 Difference]: Start difference. First operand 13829 states and 20804 transitions. Second operand 3 states. [2020-12-22 07:38:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:39,605 INFO L93 Difference]: Finished difference Result 39817 states and 59718 transitions. [2020-12-22 07:38:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:39,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:39,666 INFO L225 Difference]: With dead ends: 39817 [2020-12-22 07:38:39,667 INFO L226 Difference]: Without dead ends: 26055 [2020-12-22 07:38:39,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26055 states. [2020-12-22 07:38:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26055 to 26053. [2020-12-22 07:38:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26053 states. [2020-12-22 07:38:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26053 states to 26053 states and 38724 transitions. [2020-12-22 07:38:41,634 INFO L78 Accepts]: Start accepts. Automaton has 26053 states and 38724 transitions. Word has length 107 [2020-12-22 07:38:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 26053 states and 38724 transitions. [2020-12-22 07:38:41,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 26053 states and 38724 transitions. [2020-12-22 07:38:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 07:38:41,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:41,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:41,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:38:41,637 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash 748793536, now seen corresponding path program 1 times [2020-12-22 07:38:41,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:41,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555448351] [2020-12-22 07:38:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:41,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555448351] [2020-12-22 07:38:41,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:41,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:38:41,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339144351] [2020-12-22 07:38:41,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:38:41,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:41,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:38:41,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:38:41,779 INFO L87 Difference]: Start difference. First operand 26053 states and 38724 transitions. Second operand 8 states. [2020-12-22 07:38:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:44,862 INFO L93 Difference]: Finished difference Result 45423 states and 67129 transitions. [2020-12-22 07:38:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:38:44,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-12-22 07:38:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:44,984 INFO L225 Difference]: With dead ends: 45423 [2020-12-22 07:38:44,984 INFO L226 Difference]: Without dead ends: 45421 [2020-12-22 07:38:44,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:38:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45421 states. [2020-12-22 07:38:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45421 to 26821. [2020-12-22 07:38:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26821 states. [2020-12-22 07:38:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26821 states to 26821 states and 39364 transitions. [2020-12-22 07:38:47,287 INFO L78 Accepts]: Start accepts. Automaton has 26821 states and 39364 transitions. Word has length 108 [2020-12-22 07:38:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:47,287 INFO L481 AbstractCegarLoop]: Abstraction has 26821 states and 39364 transitions. [2020-12-22 07:38:47,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:38:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 26821 states and 39364 transitions. [2020-12-22 07:38:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 07:38:47,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:47,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:47,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:38:47,290 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1878838190, now seen corresponding path program 1 times [2020-12-22 07:38:47,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:47,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487505031] [2020-12-22 07:38:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:47,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487505031] [2020-12-22 07:38:47,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:47,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:47,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814837970] [2020-12-22 07:38:47,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:47,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:47,386 INFO L87 Difference]: Start difference. First operand 26821 states and 39364 transitions. Second operand 3 states. [2020-12-22 07:38:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:50,049 INFO L93 Difference]: Finished difference Result 53964 states and 79562 transitions. [2020-12-22 07:38:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:50,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-22 07:38:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:50,111 INFO L225 Difference]: With dead ends: 53964 [2020-12-22 07:38:50,111 INFO L226 Difference]: Without dead ends: 39369 [2020-12-22 07:38:50,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39369 states. [2020-12-22 07:38:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39369 to 39367. [2020-12-22 07:38:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39367 states. [2020-12-22 07:38:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39367 states to 39367 states and 57542 transitions. [2020-12-22 07:38:53,153 INFO L78 Accepts]: Start accepts. Automaton has 39367 states and 57542 transitions. Word has length 109 [2020-12-22 07:38:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:53,154 INFO L481 AbstractCegarLoop]: Abstraction has 39367 states and 57542 transitions. [2020-12-22 07:38:53,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 39367 states and 57542 transitions. [2020-12-22 07:38:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:38:53,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:53,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:53,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:38:53,174 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -870003369, now seen corresponding path program 1 times [2020-12-22 07:38:53,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:53,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677753272] [2020-12-22 07:38:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 07:38:53,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677753272] [2020-12-22 07:38:53,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:53,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:53,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667955586] [2020-12-22 07:38:53,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:53,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:53,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:53,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:53,438 INFO L87 Difference]: Start difference. First operand 39367 states and 57542 transitions. Second operand 10 states. [2020-12-22 07:39:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:13,417 INFO L93 Difference]: Finished difference Result 361305 states and 528015 transitions. [2020-12-22 07:39:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:13,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-12-22 07:39:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:14,187 INFO L225 Difference]: With dead ends: 361305 [2020-12-22 07:39:14,187 INFO L226 Difference]: Without dead ends: 322007 [2020-12-22 07:39:14,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:39:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322007 states. [2020-12-22 07:39:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322007 to 78663. [2020-12-22 07:39:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78663 states. [2020-12-22 07:39:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78663 states to 78663 states and 114630 transitions. [2020-12-22 07:39:22,265 INFO L78 Accepts]: Start accepts. Automaton has 78663 states and 114630 transitions. Word has length 147 [2020-12-22 07:39:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:22,265 INFO L481 AbstractCegarLoop]: Abstraction has 78663 states and 114630 transitions. [2020-12-22 07:39:22,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 78663 states and 114630 transitions. [2020-12-22 07:39:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:39:22,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:22,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:22,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:39:22,289 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:22,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1656181111, now seen corresponding path program 1 times [2020-12-22 07:39:22,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:22,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378263483] [2020-12-22 07:39:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 07:39:22,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378263483] [2020-12-22 07:39:22,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:22,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:22,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363957904] [2020-12-22 07:39:22,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:22,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:22,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:22,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:22,536 INFO L87 Difference]: Start difference. First operand 78663 states and 114630 transitions. Second operand 10 states. [2020-12-22 07:39:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:46,739 INFO L93 Difference]: Finished difference Result 400601 states and 585103 transitions. [2020-12-22 07:39:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:46,740 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-12-22 07:39:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:47,468 INFO L225 Difference]: With dead ends: 400601 [2020-12-22 07:39:47,469 INFO L226 Difference]: Without dead ends: 361303 [2020-12-22 07:39:47,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:39:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361303 states. [2020-12-22 07:39:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361303 to 137671. [2020-12-22 07:39:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137671 states. [2020-12-22 07:39:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137671 states to 137671 states and 199942 transitions. [2020-12-22 07:39:59,816 INFO L78 Accepts]: Start accepts. Automaton has 137671 states and 199942 transitions. Word has length 147 [2020-12-22 07:39:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:59,816 INFO L481 AbstractCegarLoop]: Abstraction has 137671 states and 199942 transitions. [2020-12-22 07:39:59,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 137671 states and 199942 transitions. [2020-12-22 07:39:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:39:59,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:59,841 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:59,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:39:59,842 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1507146345, now seen corresponding path program 1 times [2020-12-22 07:39:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:59,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530948626] [2020-12-22 07:39:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:00,247 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-12-22 07:40:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 07:40:00,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530948626] [2020-12-22 07:40:00,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:00,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:40:00,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293762635] [2020-12-22 07:40:00,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:40:00,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:00,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:40:00,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:40:00,373 INFO L87 Difference]: Start difference. First operand 137671 states and 199942 transitions. Second operand 10 states. [2020-12-22 07:40:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:40:31,624 INFO L93 Difference]: Finished difference Result 439897 states and 642191 transitions. [2020-12-22 07:40:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:40:31,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-12-22 07:40:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:40:32,476 INFO L225 Difference]: With dead ends: 439897 [2020-12-22 07:40:32,477 INFO L226 Difference]: Without dead ends: 400599 [2020-12-22 07:40:32,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:40:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400599 states. [2020-12-22 07:40:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400599 to 176967. [2020-12-22 07:40:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176967 states. [2020-12-22 07:40:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176967 states to 176967 states and 257030 transitions. [2020-12-22 07:40:50,167 INFO L78 Accepts]: Start accepts. Automaton has 176967 states and 257030 transitions. Word has length 147 [2020-12-22 07:40:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:40:50,168 INFO L481 AbstractCegarLoop]: Abstraction has 176967 states and 257030 transitions. [2020-12-22 07:40:50,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:40:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 176967 states and 257030 transitions. [2020-12-22 07:40:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:40:50,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:40:50,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:40:50,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:40:50,199 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:40:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:40:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1552361911, now seen corresponding path program 1 times [2020-12-22 07:40:50,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:40:50,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240343874] [2020-12-22 07:40:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:40:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 07:40:50,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240343874] [2020-12-22 07:40:50,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:50,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:40:50,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970072306] [2020-12-22 07:40:50,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:40:50,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:50,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:40:50,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:40:50,469 INFO L87 Difference]: Start difference. First operand 176967 states and 257030 transitions. Second operand 10 states.