/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_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:46:09,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:46:09,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:46:09,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:46:09,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:46:09,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:46:09,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:46:09,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:46:09,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:46:09,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:46:09,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:46:09,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:46:09,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:46:09,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:46:09,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:46:09,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:46:09,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:46:10,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:46:10,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:46:10,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:46:10,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:46:10,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:46:10,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:46:10,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:46:10,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:46:10,070 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:46:10,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:46:10,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:46:10,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:46:10,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:46:10,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:46:10,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:46:10,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:46:10,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:46:10,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:46:10,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:46:10,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:46:10,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:46:10,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:46:10,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:46:10,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:46:10,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:46:10,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:46:10,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:46:10,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:46:10,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:46:10,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:46:10,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:46:10,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:46:10,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:46:10,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:46:10,567 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:46:10,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-12-22 07:46:10,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659db3b7/a4cb157cbb8b4c189b43398605e0a4e8/FLAG414f4b4e2 [2020-12-22 07:46:11,482 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:46:11,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-12-22 07:46:11,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659db3b7/a4cb157cbb8b4c189b43398605e0a4e8/FLAG414f4b4e2 [2020-12-22 07:46:11,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659db3b7/a4cb157cbb8b4c189b43398605e0a4e8 [2020-12-22 07:46:11,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:46:11,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:46:11,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:46:11,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:46:11,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:46:11,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:46:11" (1/1) ... [2020-12-22 07:46:11,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f22ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:11, skipping insertion in model container [2020-12-22 07:46:11,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:46:11" (1/1) ... [2020-12-22 07:46:11,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:46:11,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:46:12,373 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_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2020-12-22 07:46:12,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:46:12,422 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:46:12,632 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_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2020-12-22 07:46:12,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:46:12,663 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:46:12,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12 WrapperNode [2020-12-22 07:46:12,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:46:12,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:46:12,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:46:12,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:46:12,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:46:12,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:46:12,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:46:12,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:46:12,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (1/1) ... [2020-12-22 07:46:12,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:46:12,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:46:12,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:46:12,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:46:12,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (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 07:46:13,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:46:13,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:46:13,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:46:13,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:46:15,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:46:15,298 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:46:15,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:15 BoogieIcfgContainer [2020-12-22 07:46:15,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:46:15,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:46:15,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:46:15,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:46:15,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:46:11" (1/3) ... [2020-12-22 07:46:15,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0efdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:46:15, skipping insertion in model container [2020-12-22 07:46:15,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:12" (2/3) ... [2020-12-22 07:46:15,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0efdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:46:15, skipping insertion in model container [2020-12-22 07:46:15,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:15" (3/3) ... [2020-12-22 07:46:15,316 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-12-22 07:46:15,323 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:46:15,339 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:46:15,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:46:15,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:46:15,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:46:15,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:46:15,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:46:15,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:46:15,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:46:15,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:46:15,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:46:15,428 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-12-22 07:46:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:46:15,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:15,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:15,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1610308336, now seen corresponding path program 1 times [2020-12-22 07:46:15,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:15,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155540838] [2020-12-22 07:46:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:16,257 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 07:46:16,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155540838] [2020-12-22 07:46:16,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:16,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:46:16,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301748121] [2020-12-22 07:46:16,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:46:16,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:16,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:46:16,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:46:16,288 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 2 states. [2020-12-22 07:46:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:16,391 INFO L93 Difference]: Finished difference Result 936 states and 1705 transitions. [2020-12-22 07:46:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:46:16,393 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 153 [2020-12-22 07:46:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:16,468 INFO L225 Difference]: With dead ends: 936 [2020-12-22 07:46:16,468 INFO L226 Difference]: Without dead ends: 741 [2020-12-22 07:46:16,474 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 07:46:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-12-22 07:46:16,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2020-12-22 07:46:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-12-22 07:46:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1365 transitions. [2020-12-22 07:46:16,604 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1365 transitions. Word has length 153 [2020-12-22 07:46:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:16,605 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1365 transitions. [2020-12-22 07:46:16,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:46:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1365 transitions. [2020-12-22 07:46:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:46:16,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:16,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:16,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:46:16,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1100835246, now seen corresponding path program 1 times [2020-12-22 07:46:16,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:16,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955409214] [2020-12-22 07:46:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:16,943 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 07:46:16,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955409214] [2020-12-22 07:46:16,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:16,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:46:16,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264231665] [2020-12-22 07:46:16,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:46:16,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:16,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:46:16,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:46:16,951 INFO L87 Difference]: Start difference. First operand 741 states and 1365 transitions. Second operand 5 states. [2020-12-22 07:46:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:17,130 INFO L93 Difference]: Finished difference Result 935 states and 1698 transitions. [2020-12-22 07:46:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:46:17,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 07:46:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:17,141 INFO L225 Difference]: With dead ends: 935 [2020-12-22 07:46:17,142 INFO L226 Difference]: Without dead ends: 741 [2020-12-22 07:46:17,147 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 07:46:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-12-22 07:46:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2020-12-22 07:46:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-12-22 07:46:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1300 transitions. [2020-12-22 07:46:17,171 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1300 transitions. Word has length 153 [2020-12-22 07:46:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:17,172 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1300 transitions. [2020-12-22 07:46:17,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:46:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1300 transitions. [2020-12-22 07:46:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 07:46:17,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:17,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:17,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:46:17,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash -698376180, now seen corresponding path program 1 times [2020-12-22 07:46:17,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:17,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558852145] [2020-12-22 07:46:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:17,496 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 07:46:17,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558852145] [2020-12-22 07:46:17,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:17,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:17,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875609991] [2020-12-22 07:46:17,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:17,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:17,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:17,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:17,504 INFO L87 Difference]: Start difference. First operand 741 states and 1300 transitions. Second operand 3 states. [2020-12-22 07:46:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:17,613 INFO L93 Difference]: Finished difference Result 1107 states and 1932 transitions. [2020-12-22 07:46:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:17,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 07:46:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:17,623 INFO L225 Difference]: With dead ends: 1107 [2020-12-22 07:46:17,623 INFO L226 Difference]: Without dead ends: 917 [2020-12-22 07:46:17,625 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 07:46:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-12-22 07:46:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 914. [2020-12-22 07:46:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-12-22 07:46:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1595 transitions. [2020-12-22 07:46:17,678 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1595 transitions. Word has length 217 [2020-12-22 07:46:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:17,688 INFO L481 AbstractCegarLoop]: Abstraction has 914 states and 1595 transitions. [2020-12-22 07:46:17,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1595 transitions. [2020-12-22 07:46:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 07:46:17,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:17,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:17,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:46:17,696 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash -128120140, now seen corresponding path program 1 times [2020-12-22 07:46:17,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:17,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189511742] [2020-12-22 07:46:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:18,133 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 07:46:18,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189511742] [2020-12-22 07:46:18,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:18,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:18,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58441912] [2020-12-22 07:46:18,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:18,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:18,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:18,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:18,141 INFO L87 Difference]: Start difference. First operand 914 states and 1595 transitions. Second operand 3 states. [2020-12-22 07:46:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:18,219 INFO L93 Difference]: Finished difference Result 1616 states and 2799 transitions. [2020-12-22 07:46:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:18,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 07:46:18,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:18,229 INFO L225 Difference]: With dead ends: 1616 [2020-12-22 07:46:18,229 INFO L226 Difference]: Without dead ends: 1253 [2020-12-22 07:46:18,231 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 07:46:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-12-22 07:46:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1249. [2020-12-22 07:46:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-12-22 07:46:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2168 transitions. [2020-12-22 07:46:18,288 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2168 transitions. Word has length 221 [2020-12-22 07:46:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:18,288 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 2168 transitions. [2020-12-22 07:46:18,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2168 transitions. [2020-12-22 07:46:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 07:46:18,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:18,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:18,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:46:18,295 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:18,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1683241124, now seen corresponding path program 1 times [2020-12-22 07:46:18,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:18,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129666375] [2020-12-22 07:46:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:18,574 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 07:46:18,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129666375] [2020-12-22 07:46:18,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:18,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:18,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870321021] [2020-12-22 07:46:18,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:18,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:18,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:18,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:18,578 INFO L87 Difference]: Start difference. First operand 1249 states and 2168 transitions. Second operand 3 states. [2020-12-22 07:46:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:18,666 INFO L93 Difference]: Finished difference Result 2597 states and 4474 transitions. [2020-12-22 07:46:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:18,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 07:46:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:18,679 INFO L225 Difference]: With dead ends: 2597 [2020-12-22 07:46:18,679 INFO L226 Difference]: Without dead ends: 1899 [2020-12-22 07:46:18,682 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 07:46:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-12-22 07:46:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1893. [2020-12-22 07:46:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-12-22 07:46:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3264 transitions. [2020-12-22 07:46:18,752 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3264 transitions. Word has length 225 [2020-12-22 07:46:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:18,752 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 3264 transitions. [2020-12-22 07:46:18,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3264 transitions. [2020-12-22 07:46:18,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 07:46:18,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:18,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:18,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:46:18,759 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1320539652, now seen corresponding path program 1 times [2020-12-22 07:46:18,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:18,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756011185] [2020-12-22 07:46:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:19,023 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 07:46:19,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756011185] [2020-12-22 07:46:19,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:19,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:19,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851084451] [2020-12-22 07:46:19,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:19,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:19,026 INFO L87 Difference]: Start difference. First operand 1893 states and 3264 transitions. Second operand 3 states. [2020-12-22 07:46:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:19,134 INFO L93 Difference]: Finished difference Result 4481 states and 7674 transitions. [2020-12-22 07:46:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:19,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 07:46:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:19,153 INFO L225 Difference]: With dead ends: 4481 [2020-12-22 07:46:19,153 INFO L226 Difference]: Without dead ends: 3139 [2020-12-22 07:46:19,156 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 07:46:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-12-22 07:46:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3129. [2020-12-22 07:46:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-12-22 07:46:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5356 transitions. [2020-12-22 07:46:19,271 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5356 transitions. Word has length 229 [2020-12-22 07:46:19,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:19,272 INFO L481 AbstractCegarLoop]: Abstraction has 3129 states and 5356 transitions. [2020-12-22 07:46:19,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5356 transitions. [2020-12-22 07:46:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 07:46:19,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:19,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:19,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:46:19,279 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:19,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2073741652, now seen corresponding path program 1 times [2020-12-22 07:46:19,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:19,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526898428] [2020-12-22 07:46:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:19,545 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 07:46:19,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526898428] [2020-12-22 07:46:19,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:19,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128298098] [2020-12-22 07:46:19,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:19,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:19,548 INFO L87 Difference]: Start difference. First operand 3129 states and 5356 transitions. Second operand 3 states. [2020-12-22 07:46:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:19,716 INFO L93 Difference]: Finished difference Result 8093 states and 13774 transitions. [2020-12-22 07:46:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:19,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-22 07:46:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:19,749 INFO L225 Difference]: With dead ends: 8093 [2020-12-22 07:46:19,749 INFO L226 Difference]: Without dead ends: 5515 [2020-12-22 07:46:19,756 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 07:46:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2020-12-22 07:46:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 5497. [2020-12-22 07:46:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5497 states. [2020-12-22 07:46:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 9340 transitions. [2020-12-22 07:46:19,946 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 9340 transitions. Word has length 233 [2020-12-22 07:46:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:19,947 INFO L481 AbstractCegarLoop]: Abstraction has 5497 states and 9340 transitions. [2020-12-22 07:46:19,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 9340 transitions. [2020-12-22 07:46:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 07:46:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:19,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:19,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:46:19,954 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash 337897812, now seen corresponding path program 1 times [2020-12-22 07:46:19,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:19,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514110821] [2020-12-22 07:46:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:20,305 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 07:46:20,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514110821] [2020-12-22 07:46:20,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:20,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:46:20,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823541124] [2020-12-22 07:46:20,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:46:20,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:20,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:46:20,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:46:20,314 INFO L87 Difference]: Start difference. First operand 5497 states and 9340 transitions. Second operand 7 states. [2020-12-22 07:46:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:21,300 INFO L93 Difference]: Finished difference Result 30955 states and 52693 transitions. [2020-12-22 07:46:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:46:21,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-12-22 07:46:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:21,405 INFO L225 Difference]: With dead ends: 30955 [2020-12-22 07:46:21,405 INFO L226 Difference]: Without dead ends: 26009 [2020-12-22 07:46:21,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:46:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26009 states. [2020-12-22 07:46:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26009 to 12716. [2020-12-22 07:46:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12716 states. [2020-12-22 07:46:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12716 states to 12716 states and 21610 transitions. [2020-12-22 07:46:22,094 INFO L78 Accepts]: Start accepts. Automaton has 12716 states and 21610 transitions. Word has length 237 [2020-12-22 07:46:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:22,095 INFO L481 AbstractCegarLoop]: Abstraction has 12716 states and 21610 transitions. [2020-12-22 07:46:22,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:46:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12716 states and 21610 transitions. [2020-12-22 07:46:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 07:46:22,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:22,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:22,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:46:22,106 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash -381481659, now seen corresponding path program 1 times [2020-12-22 07:46:22,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:22,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146497293] [2020-12-22 07:46:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:22,431 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 07:46:22,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146497293] [2020-12-22 07:46:22,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:22,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:22,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678727903] [2020-12-22 07:46:22,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:22,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:22,434 INFO L87 Difference]: Start difference. First operand 12716 states and 21610 transitions. Second operand 4 states. [2020-12-22 07:46:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:22,962 INFO L93 Difference]: Finished difference Result 29933 states and 50887 transitions. [2020-12-22 07:46:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:22,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-12-22 07:46:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:23,012 INFO L225 Difference]: With dead ends: 29933 [2020-12-22 07:46:23,012 INFO L226 Difference]: Without dead ends: 17768 [2020-12-22 07:46:23,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17768 states. [2020-12-22 07:46:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17768 to 17733. [2020-12-22 07:46:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17733 states. [2020-12-22 07:46:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17733 states to 17733 states and 30122 transitions. [2020-12-22 07:46:23,736 INFO L78 Accepts]: Start accepts. Automaton has 17733 states and 30122 transitions. Word has length 238 [2020-12-22 07:46:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:23,736 INFO L481 AbstractCegarLoop]: Abstraction has 17733 states and 30122 transitions. [2020-12-22 07:46:23,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 17733 states and 30122 transitions. [2020-12-22 07:46:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:23,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:23,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:23,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:46:23,751 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:23,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1038404437, now seen corresponding path program 1 times [2020-12-22 07:46:23,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:23,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907658671] [2020-12-22 07:46:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:24,038 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 07:46:24,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907658671] [2020-12-22 07:46:24,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:24,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:24,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107752447] [2020-12-22 07:46:24,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:24,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:24,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:24,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:24,041 INFO L87 Difference]: Start difference. First operand 17733 states and 30122 transitions. Second operand 4 states. [2020-12-22 07:46:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:24,899 INFO L93 Difference]: Finished difference Result 52788 states and 89750 transitions. [2020-12-22 07:46:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:24,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-12-22 07:46:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:25,002 INFO L225 Difference]: With dead ends: 52788 [2020-12-22 07:46:25,003 INFO L226 Difference]: Without dead ends: 35606 [2020-12-22 07:46:25,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35606 states. [2020-12-22 07:46:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35606 to 26401. [2020-12-22 07:46:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26401 states. [2020-12-22 07:46:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26401 states to 26401 states and 44789 transitions. [2020-12-22 07:46:26,381 INFO L78 Accepts]: Start accepts. Automaton has 26401 states and 44789 transitions. Word has length 239 [2020-12-22 07:46:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:26,382 INFO L481 AbstractCegarLoop]: Abstraction has 26401 states and 44789 transitions. [2020-12-22 07:46:26,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 26401 states and 44789 transitions. [2020-12-22 07:46:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 07:46:26,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:26,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:26,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:46:26,398 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:26,399 INFO L82 PathProgramCache]: Analyzing trace with hash 240830268, now seen corresponding path program 1 times [2020-12-22 07:46:26,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:26,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821461163] [2020-12-22 07:46:26,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:26,625 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 07:46:26,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821461163] [2020-12-22 07:46:26,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:26,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:26,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337331769] [2020-12-22 07:46:26,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:26,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:26,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:26,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:26,628 INFO L87 Difference]: Start difference. First operand 26401 states and 44789 transitions. Second operand 4 states. [2020-12-22 07:46:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:27,831 INFO L93 Difference]: Finished difference Result 79117 states and 134376 transitions. [2020-12-22 07:46:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:27,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 07:46:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:27,993 INFO L225 Difference]: With dead ends: 79117 [2020-12-22 07:46:27,993 INFO L226 Difference]: Without dead ends: 53267 [2020-12-22 07:46:28,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53267 states. [2020-12-22 07:46:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53267 to 39309. [2020-12-22 07:46:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39309 states. [2020-12-22 07:46:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39309 states to 39309 states and 66612 transitions. [2020-12-22 07:46:29,375 INFO L78 Accepts]: Start accepts. Automaton has 39309 states and 66612 transitions. Word has length 240 [2020-12-22 07:46:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:29,376 INFO L481 AbstractCegarLoop]: Abstraction has 39309 states and 66612 transitions. [2020-12-22 07:46:29,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:29,376 INFO L276 IsEmpty]: Start isEmpty. Operand 39309 states and 66612 transitions. [2020-12-22 07:46:29,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:46:29,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:29,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:29,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:46:29,397 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1477358553, now seen corresponding path program 1 times [2020-12-22 07:46:29,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:29,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698897615] [2020-12-22 07:46:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:29,808 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 07:46:29,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698897615] [2020-12-22 07:46:29,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:29,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:29,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491314252] [2020-12-22 07:46:29,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:29,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:29,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:29,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:29,811 INFO L87 Difference]: Start difference. First operand 39309 states and 66612 transitions. Second operand 3 states. [2020-12-22 07:46:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:31,116 INFO L93 Difference]: Finished difference Result 91016 states and 154562 transitions. [2020-12-22 07:46:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:31,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:46:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:31,280 INFO L225 Difference]: With dead ends: 91016 [2020-12-22 07:46:31,280 INFO L226 Difference]: Without dead ends: 62445 [2020-12-22 07:46:31,304 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 07:46:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62445 states. [2020-12-22 07:46:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62445 to 62443. [2020-12-22 07:46:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62443 states. [2020-12-22 07:46:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62443 states to 62443 states and 105666 transitions. [2020-12-22 07:46:33,073 INFO L78 Accepts]: Start accepts. Automaton has 62443 states and 105666 transitions. Word has length 241 [2020-12-22 07:46:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:33,074 INFO L481 AbstractCegarLoop]: Abstraction has 62443 states and 105666 transitions. [2020-12-22 07:46:33,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 62443 states and 105666 transitions. [2020-12-22 07:46:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:46:33,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:33,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:33,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:46:33,083 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash 384077095, now seen corresponding path program 1 times [2020-12-22 07:46:33,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:33,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358975544] [2020-12-22 07:46:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:33,458 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 07:46:33,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358975544] [2020-12-22 07:46:33,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:33,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:33,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092704088] [2020-12-22 07:46:33,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:33,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:33,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:33,469 INFO L87 Difference]: Start difference. First operand 62443 states and 105666 transitions. Second operand 3 states. [2020-12-22 07:46:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:35,451 INFO L93 Difference]: Finished difference Result 139378 states and 235916 transitions. [2020-12-22 07:46:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:35,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:46:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:35,724 INFO L225 Difference]: With dead ends: 139378 [2020-12-22 07:46:35,724 INFO L226 Difference]: Without dead ends: 96539 [2020-12-22 07:46:35,802 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 07:46:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96539 states. [2020-12-22 07:46:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96539 to 96537. [2020-12-22 07:46:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96537 states. [2020-12-22 07:46:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96537 states to 96537 states and 162877 transitions. [2020-12-22 07:46:38,440 INFO L78 Accepts]: Start accepts. Automaton has 96537 states and 162877 transitions. Word has length 241 [2020-12-22 07:46:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:38,440 INFO L481 AbstractCegarLoop]: Abstraction has 96537 states and 162877 transitions. [2020-12-22 07:46:38,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 96537 states and 162877 transitions. [2020-12-22 07:46:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:46:38,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:38,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:38,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:46:38,448 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash 698928679, now seen corresponding path program 1 times [2020-12-22 07:46:38,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:38,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658541663] [2020-12-22 07:46:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:38,899 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 07:46:38,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658541663] [2020-12-22 07:46:38,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:38,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:38,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908172787] [2020-12-22 07:46:38,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:38,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:38,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:38,902 INFO L87 Difference]: Start difference. First operand 96537 states and 162877 transitions. Second operand 3 states. [2020-12-22 07:46:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:41,046 INFO L93 Difference]: Finished difference Result 214905 states and 362677 transitions. [2020-12-22 07:46:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:41,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:46:41,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:41,537 INFO L225 Difference]: With dead ends: 214905 [2020-12-22 07:46:41,537 INFO L226 Difference]: Without dead ends: 148403 [2020-12-22 07:46:41,630 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 07:46:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148403 states. [2020-12-22 07:46:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148403 to 148401. [2020-12-22 07:46:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148401 states. [2020-12-22 07:46:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148401 states to 148401 states and 249531 transitions. [2020-12-22 07:46:45,112 INFO L78 Accepts]: Start accepts. Automaton has 148401 states and 249531 transitions. Word has length 241 [2020-12-22 07:46:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:45,112 INFO L481 AbstractCegarLoop]: Abstraction has 148401 states and 249531 transitions. [2020-12-22 07:46:45,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 148401 states and 249531 transitions. [2020-12-22 07:46:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:46:45,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:45,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:45,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:46:45,116 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1094586151, now seen corresponding path program 1 times [2020-12-22 07:46:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:45,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902931004] [2020-12-22 07:46:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:45,641 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 07:46:45,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902931004] [2020-12-22 07:46:45,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:45,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:45,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136610366] [2020-12-22 07:46:45,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:45,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:45,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:45,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:45,645 INFO L87 Difference]: Start difference. First operand 148401 states and 249531 transitions. Second operand 3 states. [2020-12-22 07:46:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:48,857 INFO L93 Difference]: Finished difference Result 289986 states and 487947 transitions. [2020-12-22 07:46:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:48,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:46:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:49,326 INFO L225 Difference]: With dead ends: 289986 [2020-12-22 07:46:49,327 INFO L226 Difference]: Without dead ends: 209603 [2020-12-22 07:46:49,424 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 07:46:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209603 states. [2020-12-22 07:46:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209603 to 209601. [2020-12-22 07:46:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209601 states. [2020-12-22 07:46:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209601 states to 209601 states and 351353 transitions. [2020-12-22 07:46:54,771 INFO L78 Accepts]: Start accepts. Automaton has 209601 states and 351353 transitions. Word has length 241 [2020-12-22 07:46:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:54,772 INFO L481 AbstractCegarLoop]: Abstraction has 209601 states and 351353 transitions. [2020-12-22 07:46:54,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand 209601 states and 351353 transitions. [2020-12-22 07:46:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:46:54,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:54,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:54,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:46:54,775 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1096527833, now seen corresponding path program 1 times [2020-12-22 07:46:54,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:54,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195348195] [2020-12-22 07:46:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:54,948 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 07:46:54,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195348195] [2020-12-22 07:46:54,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:54,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:54,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576318027] [2020-12-22 07:46:54,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:54,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:54,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:54,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:54,953 INFO L87 Difference]: Start difference. First operand 209601 states and 351353 transitions. Second operand 3 states. [2020-12-22 07:46:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:59,810 INFO L93 Difference]: Finished difference Result 406666 states and 682259 transitions. [2020-12-22 07:46:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:59,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:46:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:00,426 INFO L225 Difference]: With dead ends: 406666 [2020-12-22 07:47:00,426 INFO L226 Difference]: Without dead ends: 293743 [2020-12-22 07:47:00,571 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 07:47:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293743 states. [2020-12-22 07:47:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293743 to 293741. [2020-12-22 07:47:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293741 states. [2020-12-22 07:47:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293741 states to 293741 states and 490720 transitions. [2020-12-22 07:47:08,444 INFO L78 Accepts]: Start accepts. Automaton has 293741 states and 490720 transitions. Word has length 241 [2020-12-22 07:47:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:08,445 INFO L481 AbstractCegarLoop]: Abstraction has 293741 states and 490720 transitions. [2020-12-22 07:47:08,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:47:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 293741 states and 490720 transitions. [2020-12-22 07:47:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:47:08,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:08,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:08,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:47:08,450 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:08,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1411404802, now seen corresponding path program 1 times [2020-12-22 07:47:08,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:08,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311513677] [2020-12-22 07:47:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:47:08,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311513677] [2020-12-22 07:47:08,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:08,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:47:08,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758232937] [2020-12-22 07:47:08,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:47:08,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:08,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:47:08,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:08,708 INFO L87 Difference]: Start difference. First operand 293741 states and 490720 transitions. Second operand 4 states. [2020-12-22 07:47:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:19,703 INFO L93 Difference]: Finished difference Result 970895 states and 1623622 transitions. [2020-12-22 07:47:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:47:19,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-12-22 07:47:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:21,646 INFO L225 Difference]: With dead ends: 970895 [2020-12-22 07:47:21,647 INFO L226 Difference]: Without dead ends: 677787 [2020-12-22 07:47:21,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677787 states. [2020-12-22 07:47:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677787 to 479888. [2020-12-22 07:47:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479888 states. [2020-12-22 07:47:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479888 states to 479888 states and 799756 transitions. [2020-12-22 07:47:40,175 INFO L78 Accepts]: Start accepts. Automaton has 479888 states and 799756 transitions. Word has length 241 [2020-12-22 07:47:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:40,176 INFO L481 AbstractCegarLoop]: Abstraction has 479888 states and 799756 transitions. [2020-12-22 07:47:40,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 479888 states and 799756 transitions. [2020-12-22 07:47:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 07:47:40,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:40,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:40,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:47:40,212 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash -786485965, now seen corresponding path program 1 times [2020-12-22 07:47:40,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11259502] [2020-12-22 07:47:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:40,422 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 07:47:40,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11259502] [2020-12-22 07:47:40,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:40,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:47:40,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504118491] [2020-12-22 07:47:40,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:47:40,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:47:40,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:40,432 INFO L87 Difference]: Start difference. First operand 479888 states and 799756 transitions. Second operand 4 states. [2020-12-22 07:47:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:59,448 INFO L93 Difference]: Finished difference Result 1553379 states and 2591719 transitions. [2020-12-22 07:47:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:47:59,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-12-22 07:47:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:48:02,247 INFO L225 Difference]: With dead ends: 1553379 [2020-12-22 07:48:02,247 INFO L226 Difference]: Without dead ends: 1074124 [2020-12-22 07:48:02,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:48:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074124 states. [2020-12-22 07:48:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074124 to 775639. [2020-12-22 07:48:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775639 states. [2020-12-22 07:48:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775639 states to 775639 states and 1289584 transitions. [2020-12-22 07:48:36,389 INFO L78 Accepts]: Start accepts. Automaton has 775639 states and 1289584 transitions. Word has length 242 [2020-12-22 07:48:36,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:48:36,390 INFO L481 AbstractCegarLoop]: Abstraction has 775639 states and 1289584 transitions. [2020-12-22 07:48:36,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:48:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 775639 states and 1289584 transitions. [2020-12-22 07:48:36,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 07:48:36,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:48:36,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:36,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:48:36,393 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:48:36,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:48:36,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2091464427, now seen corresponding path program 1 times [2020-12-22 07:48:36,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:48:36,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746595943] [2020-12-22 07:48:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:48:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:48:37,690 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 07:48:37,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746595943] [2020-12-22 07:48:37,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:48:37,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:48:37,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141197654] [2020-12-22 07:48:37,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:48:37,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:48:37,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:48:37,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:48:37,698 INFO L87 Difference]: Start difference. First operand 775639 states and 1289584 transitions. Second operand 7 states. [2020-12-22 07:49:01,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:49:01,937 INFO L93 Difference]: Finished difference Result 1550649 states and 2578069 transitions. [2020-12-22 07:49:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:49:01,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-12-22 07:49:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted.