/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_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:38:48,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:38:48,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:38:48,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:38:48,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:38:48,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:38:48,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:38:48,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:38:48,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:38:48,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:38:48,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:38:48,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:38:48,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:38:48,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:38:48,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:38:48,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:38:48,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:38:48,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:38:48,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:38:48,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:38:48,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:38:48,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:38:48,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:38:48,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:38:48,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:38:48,489 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:38:48,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:38:48,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:38:48,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:38:48,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:38:48,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:38:48,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:38:48,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:38:48,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:38:48,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:38:48,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:38:48,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:38:48,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:38:48,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:38:48,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:38:48,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:38:48,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:38:48,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:38:48,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:38:48,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:38:48,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:38:48,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:38:48,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:38:49,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:38:49,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:38:49,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:38:49,010 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:38:49,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:49,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4b9d9e2/f26e5b917e0f40f4af92476ebb3cab44/FLAG9953fa922 [2020-12-22 07:38:49,737 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:38:49,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:49,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4b9d9e2/f26e5b917e0f40f4af92476ebb3cab44/FLAG9953fa922 [2020-12-22 07:38:50,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4b9d9e2/f26e5b917e0f40f4af92476ebb3cab44 [2020-12-22 07:38:50,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:38:50,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:38:50,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:50,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:38:50,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:38:50,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2a2580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50, skipping insertion in model container [2020-12-22 07:38:50,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:38:50,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:38:50,484 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_overflow.ufo.UNBOUNDED.pals.c[26555,26568] [2020-12-22 07:38:50,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:50,506 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:38:50,603 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_overflow.ufo.UNBOUNDED.pals.c[26555,26568] [2020-12-22 07:38:50,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:50,643 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:38:50,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50 WrapperNode [2020-12-22 07:38:50,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:50,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:50,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:38:50,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:38:50,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:50,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:38:50,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:38:50,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:38:50,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (1/1) ... [2020-12-22 07:38:50,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:38:50,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:38:50,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:38:50,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:38:50,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (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 07:38:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:38:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:38:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:38:51,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:38:51,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:38:51,889 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 07:38:51,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:51 BoogieIcfgContainer [2020-12-22 07:38:51,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:38:51,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:38:51,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:38:51,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:38:51,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:38:50" (1/3) ... [2020-12-22 07:38:51,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f33cbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:51, skipping insertion in model container [2020-12-22 07:38:51,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:50" (2/3) ... [2020-12-22 07:38:51,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f33cbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:51, skipping insertion in model container [2020-12-22 07:38:51,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:51" (3/3) ... [2020-12-22 07:38:51,908 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:38:51,919 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:38:51,925 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:38:51,945 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:38:51,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:38:51,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:38:51,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:38:51,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:38:51,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:38:51,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:38:51,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:38:51,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:38:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-12-22 07:38:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:52,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:52,016 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 07:38:52,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:52,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:52,023 INFO L82 PathProgramCache]: Analyzing trace with hash -486996250, now seen corresponding path program 1 times [2020-12-22 07:38:52,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:52,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906767502] [2020-12-22 07:38:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:52,409 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 07:38:52,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906767502] [2020-12-22 07:38:52,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:52,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:38:52,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835533673] [2020-12-22 07:38:52,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:38:52,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:52,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:38:52,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:52,437 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2020-12-22 07:38:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:52,471 INFO L93 Difference]: Finished difference Result 222 states and 379 transitions. [2020-12-22 07:38:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:38:52,473 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-12-22 07:38:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:52,486 INFO L225 Difference]: With dead ends: 222 [2020-12-22 07:38:52,486 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 07:38:52,490 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 07:38:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 07:38:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-12-22 07:38:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 07:38:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 248 transitions. [2020-12-22 07:38:52,546 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 248 transitions. Word has length 45 [2020-12-22 07:38:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:52,546 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 248 transitions. [2020-12-22 07:38:52,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:38:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 248 transitions. [2020-12-22 07:38:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:52,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:52,550 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 07:38:52,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:38:52,550 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1858803548, now seen corresponding path program 1 times [2020-12-22 07:38:52,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:52,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064685477] [2020-12-22 07:38:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:52,774 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 07:38:52,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064685477] [2020-12-22 07:38:52,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:52,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:52,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337317034] [2020-12-22 07:38:52,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:38:52,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:52,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:38:52,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:38:52,783 INFO L87 Difference]: Start difference. First operand 142 states and 248 transitions. Second operand 5 states. [2020-12-22 07:38:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:53,003 INFO L93 Difference]: Finished difference Result 221 states and 372 transitions. [2020-12-22 07:38:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:38:53,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 07:38:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:53,010 INFO L225 Difference]: With dead ends: 221 [2020-12-22 07:38:53,010 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 07:38:53,013 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 07:38:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 07:38:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-12-22 07:38:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 07:38:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 187 transitions. [2020-12-22 07:38:53,041 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 187 transitions. Word has length 45 [2020-12-22 07:38:53,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:53,044 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 187 transitions. [2020-12-22 07:38:53,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:38:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 187 transitions. [2020-12-22 07:38:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:53,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:53,052 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 07:38:53,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:38:53,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1176555156, now seen corresponding path program 1 times [2020-12-22 07:38:53,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:53,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300552293] [2020-12-22 07:38:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:53,299 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 07:38:53,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300552293] [2020-12-22 07:38:53,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:53,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:53,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12813346] [2020-12-22 07:38:53,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:53,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:53,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:53,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:53,302 INFO L87 Difference]: Start difference. First operand 142 states and 187 transitions. Second operand 3 states. [2020-12-22 07:38:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:53,327 INFO L93 Difference]: Finished difference Result 286 states and 417 transitions. [2020-12-22 07:38:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:53,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:53,330 INFO L225 Difference]: With dead ends: 286 [2020-12-22 07:38:53,330 INFO L226 Difference]: Without dead ends: 211 [2020-12-22 07:38:53,331 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 07:38:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-12-22 07:38:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-12-22 07:38:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-12-22 07:38:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 295 transitions. [2020-12-22 07:38:53,344 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 295 transitions. Word has length 105 [2020-12-22 07:38:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:53,345 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 295 transitions. [2020-12-22 07:38:53,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 295 transitions. [2020-12-22 07:38:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:53,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:53,348 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 07:38:53,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:38:53,348 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1701405430, now seen corresponding path program 1 times [2020-12-22 07:38:53,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:53,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824871354] [2020-12-22 07:38:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:53,511 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 07:38:53,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824871354] [2020-12-22 07:38:53,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:53,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:53,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853238967] [2020-12-22 07:38:53,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:53,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:53,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:53,543 INFO L87 Difference]: Start difference. First operand 209 states and 295 transitions. Second operand 3 states. [2020-12-22 07:38:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:53,575 INFO L93 Difference]: Finished difference Result 481 states and 731 transitions. [2020-12-22 07:38:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:53,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:53,579 INFO L225 Difference]: With dead ends: 481 [2020-12-22 07:38:53,579 INFO L226 Difference]: Without dead ends: 339 [2020-12-22 07:38:53,580 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 07:38:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-12-22 07:38:53,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2020-12-22 07:38:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-22 07:38:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 500 transitions. [2020-12-22 07:38:53,599 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 500 transitions. Word has length 105 [2020-12-22 07:38:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:53,600 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 500 transitions. [2020-12-22 07:38:53,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 500 transitions. [2020-12-22 07:38:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:53,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:53,602 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 07:38:53,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:38:53,602 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:53,603 INFO L82 PathProgramCache]: Analyzing trace with hash -179136962, now seen corresponding path program 1 times [2020-12-22 07:38:53,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:53,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040368603] [2020-12-22 07:38:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:53,714 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 07:38:53,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040368603] [2020-12-22 07:38:53,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:53,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:53,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603477781] [2020-12-22 07:38:53,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:53,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:53,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:53,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:53,717 INFO L87 Difference]: Start difference. First operand 337 states and 500 transitions. Second operand 3 states. [2020-12-22 07:38:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:53,756 INFO L93 Difference]: Finished difference Result 853 states and 1326 transitions. [2020-12-22 07:38:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:53,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:53,761 INFO L225 Difference]: With dead ends: 853 [2020-12-22 07:38:53,761 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 07:38:53,763 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 07:38:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 07:38:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-12-22 07:38:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-12-22 07:38:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 888 transitions. [2020-12-22 07:38:53,790 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 888 transitions. Word has length 105 [2020-12-22 07:38:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:53,791 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 888 transitions. [2020-12-22 07:38:53,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 888 transitions. [2020-12-22 07:38:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:53,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:53,793 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 07:38:53,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:38:53,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1430042254, now seen corresponding path program 1 times [2020-12-22 07:38:53,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:53,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145591362] [2020-12-22 07:38:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:53,951 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 07:38:53,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145591362] [2020-12-22 07:38:53,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:53,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:53,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087782336] [2020-12-22 07:38:53,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:53,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:53,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:53,955 INFO L87 Difference]: Start difference. First operand 581 states and 888 transitions. Second operand 3 states. [2020-12-22 07:38:54,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:54,015 INFO L93 Difference]: Finished difference Result 1561 states and 2450 transitions. [2020-12-22 07:38:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:54,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:54,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:54,027 INFO L225 Difference]: With dead ends: 1561 [2020-12-22 07:38:54,027 INFO L226 Difference]: Without dead ends: 1047 [2020-12-22 07:38:54,028 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 07:38:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-12-22 07:38:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1045. [2020-12-22 07:38:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-12-22 07:38:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1620 transitions. [2020-12-22 07:38:54,095 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1620 transitions. Word has length 105 [2020-12-22 07:38:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:54,095 INFO L481 AbstractCegarLoop]: Abstraction has 1045 states and 1620 transitions. [2020-12-22 07:38:54,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1620 transitions. [2020-12-22 07:38:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:54,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:54,098 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 07:38:54,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:38:54,098 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:54,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2119342312, now seen corresponding path program 1 times [2020-12-22 07:38:54,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:54,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498700201] [2020-12-22 07:38:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:54,232 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 07:38:54,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498700201] [2020-12-22 07:38:54,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:54,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:54,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022165223] [2020-12-22 07:38:54,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:54,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:54,234 INFO L87 Difference]: Start difference. First operand 1045 states and 1620 transitions. Second operand 3 states. [2020-12-22 07:38:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:54,300 INFO L93 Difference]: Finished difference Result 2905 states and 4566 transitions. [2020-12-22 07:38:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:54,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:54,312 INFO L225 Difference]: With dead ends: 2905 [2020-12-22 07:38:54,312 INFO L226 Difference]: Without dead ends: 1927 [2020-12-22 07:38:54,315 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 07:38:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-12-22 07:38:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2020-12-22 07:38:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-12-22 07:38:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2996 transitions. [2020-12-22 07:38:54,387 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2996 transitions. Word has length 105 [2020-12-22 07:38:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:54,388 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2996 transitions. [2020-12-22 07:38:54,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2996 transitions. [2020-12-22 07:38:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:54,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:54,393 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 07:38:54,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:38:54,393 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash 179311454, now seen corresponding path program 1 times [2020-12-22 07:38:54,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:54,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595285139] [2020-12-22 07:38:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:54,532 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 07:38:54,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595285139] [2020-12-22 07:38:54,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:54,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:54,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934811341] [2020-12-22 07:38:54,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:54,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:54,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:54,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:54,535 INFO L87 Difference]: Start difference. First operand 1925 states and 2996 transitions. Second operand 3 states. [2020-12-22 07:38:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:54,687 INFO L93 Difference]: Finished difference Result 5449 states and 8534 transitions. [2020-12-22 07:38:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:54,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:54,722 INFO L225 Difference]: With dead ends: 5449 [2020-12-22 07:38:54,722 INFO L226 Difference]: Without dead ends: 3591 [2020-12-22 07:38:54,727 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 07:38:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2020-12-22 07:38:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3589. [2020-12-22 07:38:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-12-22 07:38:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5572 transitions. [2020-12-22 07:38:54,939 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5572 transitions. Word has length 105 [2020-12-22 07:38:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:54,939 INFO L481 AbstractCegarLoop]: Abstraction has 3589 states and 5572 transitions. [2020-12-22 07:38:54,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5572 transitions. [2020-12-22 07:38:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:54,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:54,941 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 07:38:54,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:38:54,941 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:54,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1414973228, now seen corresponding path program 1 times [2020-12-22 07:38:54,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:54,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612717385] [2020-12-22 07:38:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:55,205 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 07:38:55,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612717385] [2020-12-22 07:38:55,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:55,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:55,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697052184] [2020-12-22 07:38:55,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:55,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:55,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:55,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:55,217 INFO L87 Difference]: Start difference. First operand 3589 states and 5572 transitions. Second operand 6 states. [2020-12-22 07:38:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:55,599 INFO L93 Difference]: Finished difference Result 7111 states and 11077 transitions. [2020-12-22 07:38:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:55,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-12-22 07:38:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:55,620 INFO L225 Difference]: With dead ends: 7111 [2020-12-22 07:38:55,620 INFO L226 Difference]: Without dead ends: 3589 [2020-12-22 07:38:55,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-12-22 07:38:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3589. [2020-12-22 07:38:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-12-22 07:38:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5540 transitions. [2020-12-22 07:38:55,847 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5540 transitions. Word has length 105 [2020-12-22 07:38:55,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:55,847 INFO L481 AbstractCegarLoop]: Abstraction has 3589 states and 5540 transitions. [2020-12-22 07:38:55,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5540 transitions. [2020-12-22 07:38:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:55,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:55,849 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 07:38:55,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:38:55,849 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:55,850 INFO L82 PathProgramCache]: Analyzing trace with hash -905500138, now seen corresponding path program 1 times [2020-12-22 07:38:55,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:55,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878374858] [2020-12-22 07:38:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:55,976 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 07:38:55,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878374858] [2020-12-22 07:38:55,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:55,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:55,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058147228] [2020-12-22 07:38:55,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:55,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:55,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:55,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:55,978 INFO L87 Difference]: Start difference. First operand 3589 states and 5540 transitions. Second operand 6 states. [2020-12-22 07:38:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:56,372 INFO L93 Difference]: Finished difference Result 7111 states and 11013 transitions. [2020-12-22 07:38:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:56,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-12-22 07:38:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:56,394 INFO L225 Difference]: With dead ends: 7111 [2020-12-22 07:38:56,395 INFO L226 Difference]: Without dead ends: 3589 [2020-12-22 07:38:56,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-12-22 07:38:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3589. [2020-12-22 07:38:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-12-22 07:38:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5508 transitions. [2020-12-22 07:38:56,630 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5508 transitions. Word has length 105 [2020-12-22 07:38:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:56,631 INFO L481 AbstractCegarLoop]: Abstraction has 3589 states and 5508 transitions. [2020-12-22 07:38:56,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5508 transitions. [2020-12-22 07:38:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:56,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:56,632 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 07:38:56,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:38:56,633 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:56,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1180259752, now seen corresponding path program 1 times [2020-12-22 07:38:56,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:56,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770023605] [2020-12-22 07:38:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:56,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770023605] [2020-12-22 07:38:56,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:56,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:56,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028774810] [2020-12-22 07:38:56,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:56,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:56,908 INFO L87 Difference]: Start difference. First operand 3589 states and 5508 transitions. Second operand 10 states. [2020-12-22 07:39:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:00,362 INFO L93 Difference]: Finished difference Result 59941 states and 92564 transitions. [2020-12-22 07:39:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:39:00,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-12-22 07:39:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:00,667 INFO L225 Difference]: With dead ends: 59941 [2020-12-22 07:39:00,667 INFO L226 Difference]: Without dead ends: 56419 [2020-12-22 07:39:00,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:39:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56419 states. [2020-12-22 07:39:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56419 to 7109. [2020-12-22 07:39:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7109 states. [2020-12-22 07:39:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 10820 transitions. [2020-12-22 07:39:01,868 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 10820 transitions. Word has length 105 [2020-12-22 07:39:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:01,869 INFO L481 AbstractCegarLoop]: Abstraction has 7109 states and 10820 transitions. [2020-12-22 07:39:01,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 10820 transitions. [2020-12-22 07:39:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:39:01,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:01,870 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 07:39:01,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:39:01,871 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1773942360, now seen corresponding path program 1 times [2020-12-22 07:39:01,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:01,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236235287] [2020-12-22 07:39:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:01,977 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 07:39:01,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236235287] [2020-12-22 07:39:01,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:01,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:39:01,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158783805] [2020-12-22 07:39:01,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:39:01,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:01,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:39:01,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:39:01,980 INFO L87 Difference]: Start difference. First operand 7109 states and 10820 transitions. Second operand 3 states. [2020-12-22 07:39:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:02,747 INFO L93 Difference]: Finished difference Result 17515 states and 26696 transitions. [2020-12-22 07:39:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:39:02,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:39:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:02,770 INFO L225 Difference]: With dead ends: 17515 [2020-12-22 07:39:02,770 INFO L226 Difference]: Without dead ends: 10473 [2020-12-22 07:39:02,783 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 07:39:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2020-12-22 07:39:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 10471. [2020-12-22 07:39:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10471 states. [2020-12-22 07:39:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15846 transitions. [2020-12-22 07:39:03,798 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15846 transitions. Word has length 107 [2020-12-22 07:39:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:03,799 INFO L481 AbstractCegarLoop]: Abstraction has 10471 states and 15846 transitions. [2020-12-22 07:39:03,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:39:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15846 transitions. [2020-12-22 07:39:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:39:03,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:03,801 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 07:39:03,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:39:03,801 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1707448848, now seen corresponding path program 1 times [2020-12-22 07:39:03,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:03,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539243003] [2020-12-22 07:39:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:04,330 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 07:39:04,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539243003] [2020-12-22 07:39:04,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:04,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:04,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214042126] [2020-12-22 07:39:04,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:04,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:04,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:04,337 INFO L87 Difference]: Start difference. First operand 10471 states and 15846 transitions. Second operand 10 states. [2020-12-22 07:39:04,752 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-22 07:39:04,998 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-12-22 07:39:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:06,301 INFO L93 Difference]: Finished difference Result 26061 states and 39577 transitions. [2020-12-22 07:39:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:06,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-12-22 07:39:06,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:06,328 INFO L225 Difference]: With dead ends: 26061 [2020-12-22 07:39:06,329 INFO L226 Difference]: Without dead ends: 15659 [2020-12-22 07:39:06,346 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 07:39:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15659 states. [2020-12-22 07:39:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15659 to 10471. [2020-12-22 07:39:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10471 states. [2020-12-22 07:39:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15750 transitions. [2020-12-22 07:39:07,550 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15750 transitions. Word has length 107 [2020-12-22 07:39:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:07,551 INFO L481 AbstractCegarLoop]: Abstraction has 10471 states and 15750 transitions. [2020-12-22 07:39:07,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15750 transitions. [2020-12-22 07:39:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:39:07,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:07,552 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 07:39:07,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:39:07,553 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash 81465228, now seen corresponding path program 1 times [2020-12-22 07:39:07,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:07,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814578240] [2020-12-22 07:39:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:07,633 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 07:39:07,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814578240] [2020-12-22 07:39:07,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:07,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:39:07,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72239775] [2020-12-22 07:39:07,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:39:07,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:39:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:39:07,635 INFO L87 Difference]: Start difference. First operand 10471 states and 15750 transitions. Second operand 3 states. [2020-12-22 07:39:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:08,733 INFO L93 Difference]: Finished difference Result 30123 states and 45192 transitions. [2020-12-22 07:39:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:39:08,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:39:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:08,772 INFO L225 Difference]: With dead ends: 30123 [2020-12-22 07:39:08,772 INFO L226 Difference]: Without dead ends: 19721 [2020-12-22 07:39:08,788 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 07:39:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19721 states. [2020-12-22 07:39:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19721 to 19719. [2020-12-22 07:39:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19719 states. [2020-12-22 07:39:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19719 states to 19719 states and 29318 transitions. [2020-12-22 07:39:10,700 INFO L78 Accepts]: Start accepts. Automaton has 19719 states and 29318 transitions. Word has length 107 [2020-12-22 07:39:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:10,701 INFO L481 AbstractCegarLoop]: Abstraction has 19719 states and 29318 transitions. [2020-12-22 07:39:10,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:39:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 19719 states and 29318 transitions. [2020-12-22 07:39:10,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:39:10,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:10,702 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 07:39:10,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:39:10,702 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:10,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1328972844, now seen corresponding path program 1 times [2020-12-22 07:39:10,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:10,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178878039] [2020-12-22 07:39:10,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:10,781 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 07:39:10,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178878039] [2020-12-22 07:39:10,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:10,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:39:10,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41268526] [2020-12-22 07:39:10,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:39:10,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:39:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:39:10,783 INFO L87 Difference]: Start difference. First operand 19719 states and 29318 transitions. Second operand 3 states. [2020-12-22 07:39:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:13,002 INFO L93 Difference]: Finished difference Result 56715 states and 83976 transitions. [2020-12-22 07:39:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:39:13,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:39:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:13,052 INFO L225 Difference]: With dead ends: 56715 [2020-12-22 07:39:13,053 INFO L226 Difference]: Without dead ends: 37065 [2020-12-22 07:39:13,081 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 07:39:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37065 states. [2020-12-22 07:39:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37065 to 37063. [2020-12-22 07:39:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37063 states. [2020-12-22 07:39:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37063 states to 37063 states and 54342 transitions. [2020-12-22 07:39:16,452 INFO L78 Accepts]: Start accepts. Automaton has 37063 states and 54342 transitions. Word has length 107 [2020-12-22 07:39:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:16,453 INFO L481 AbstractCegarLoop]: Abstraction has 37063 states and 54342 transitions. [2020-12-22 07:39:16,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:39:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 37063 states and 54342 transitions. [2020-12-22 07:39:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 07:39:16,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:16,454 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 07:39:16,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:39:16,455 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1806029504, now seen corresponding path program 1 times [2020-12-22 07:39:16,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:16,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321463504] [2020-12-22 07:39:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:16,623 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 07:39:16,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321463504] [2020-12-22 07:39:16,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:16,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:39:16,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206344479] [2020-12-22 07:39:16,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:39:16,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:16,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:39:16,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:39:16,626 INFO L87 Difference]: Start difference. First operand 37063 states and 54342 transitions. Second operand 8 states. [2020-12-22 07:39:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:22,356 INFO L93 Difference]: Finished difference Result 68718 states and 99861 transitions. [2020-12-22 07:39:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:22,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-12-22 07:39:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:22,532 INFO L225 Difference]: With dead ends: 68718 [2020-12-22 07:39:22,532 INFO L226 Difference]: Without dead ends: 68716 [2020-12-22 07:39:22,551 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 07:39:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68716 states. [2020-12-22 07:39:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68716 to 38599. [2020-12-22 07:39:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38599 states. [2020-12-22 07:39:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38599 states to 38599 states and 55750 transitions. [2020-12-22 07:39:26,116 INFO L78 Accepts]: Start accepts. Automaton has 38599 states and 55750 transitions. Word has length 108 [2020-12-22 07:39:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:26,116 INFO L481 AbstractCegarLoop]: Abstraction has 38599 states and 55750 transitions. [2020-12-22 07:39:26,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:39:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 38599 states and 55750 transitions. [2020-12-22 07:39:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:39:26,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:26,140 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:26,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:39:26,141 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1724405917, now seen corresponding path program 1 times [2020-12-22 07:39:26,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:26,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119423829] [2020-12-22 07:39:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 07:39:26,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119423829] [2020-12-22 07:39:26,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:26,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:26,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097401670] [2020-12-22 07:39:26,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:26,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:26,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:26,404 INFO L87 Difference]: Start difference. First operand 38599 states and 55750 transitions. Second operand 10 states. [2020-12-22 07:39:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:49,831 INFO L93 Difference]: Finished difference Result 354265 states and 511503 transitions. [2020-12-22 07:39:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:49,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-12-22 07:39:49,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:50,391 INFO L225 Difference]: With dead ends: 354265 [2020-12-22 07:39:50,391 INFO L226 Difference]: Without dead ends: 315735 [2020-12-22 07:39:50,488 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 07:39:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315735 states. [2020-12-22 07:39:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315735 to 77127. [2020-12-22 07:39:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77127 states. [2020-12-22 07:39:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77127 states to 77127 states and 111046 transitions. [2020-12-22 07:39:59,397 INFO L78 Accepts]: Start accepts. Automaton has 77127 states and 111046 transitions. Word has length 147 [2020-12-22 07:39:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:59,398 INFO L481 AbstractCegarLoop]: Abstraction has 77127 states and 111046 transitions. [2020-12-22 07:39:59,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 77127 states and 111046 transitions. [2020-12-22 07:39:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:39:59,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:59,430 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:59,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:39:59,431 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:59,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1323053763, now seen corresponding path program 1 times [2020-12-22 07:39:59,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:59,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864160284] [2020-12-22 07:39:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:39:59,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864160284] [2020-12-22 07:39:59,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:59,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:59,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219169464] [2020-12-22 07:39:59,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:59,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:59,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:59,688 INFO L87 Difference]: Start difference. First operand 77127 states and 111046 transitions. Second operand 10 states. [2020-12-22 07:40:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:40:27,872 INFO L93 Difference]: Finished difference Result 392793 states and 566799 transitions. [2020-12-22 07:40:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:40:27,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-12-22 07:40:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:40:28,676 INFO L225 Difference]: With dead ends: 392793 [2020-12-22 07:40:28,676 INFO L226 Difference]: Without dead ends: 354263 [2020-12-22 07:40:28,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:40:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354263 states. [2020-12-22 07:40:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354263 to 134983. [2020-12-22 07:40:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134983 states. [2020-12-22 07:40:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134983 states to 134983 states and 193670 transitions. [2020-12-22 07:40:43,228 INFO L78 Accepts]: Start accepts. Automaton has 134983 states and 193670 transitions. Word has length 147 [2020-12-22 07:40:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:40:43,229 INFO L481 AbstractCegarLoop]: Abstraction has 134983 states and 193670 transitions. [2020-12-22 07:40:43,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:40:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 134983 states and 193670 transitions. [2020-12-22 07:40:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:40:43,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:40:43,255 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-12-22 07:40:43,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:40:43,255 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:40:43,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:40:43,256 INFO L82 PathProgramCache]: Analyzing trace with hash 146379219, now seen corresponding path program 1 times [2020-12-22 07:40:43,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:40:43,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227106917] [2020-12-22 07:40:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:40:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:40:43,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227106917] [2020-12-22 07:40:43,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:43,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:40:43,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243009216] [2020-12-22 07:40:43,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:40:43,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:43,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:40:43,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:40:43,464 INFO L87 Difference]: Start difference. First operand 134983 states and 193670 transitions. Second operand 10 states. [2020-12-22 07:41:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:41:19,313 INFO L93 Difference]: Finished difference Result 431321 states and 622095 transitions. [2020-12-22 07:41:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:41:19,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-12-22 07:41:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:41:20,082 INFO L225 Difference]: With dead ends: 431321 [2020-12-22 07:41:20,083 INFO L226 Difference]: Without dead ends: 392791 [2020-12-22 07:41:20,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:41:20,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392791 states.