/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/product-lines/elevator_spec14_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:55:57,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:55:57,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:55:57,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:55:57,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:55:57,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:55:57,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:55:57,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:55:57,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:55:57,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:55:57,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:55:57,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 05:55:57,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:55:57,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:55:57,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:55:57,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:55:57,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:55:57,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:55:57,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:55:57,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:55:57,640 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:55:57,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:55:57,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:55:57,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:55:57,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:55:57,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:55:57,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:55:57,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:55:57,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:55:57,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:55:57,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:55:57,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:55:57,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:55:57,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:57,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:55:57,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:55:57,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:55:57,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:55:57,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:55:57,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:55:57,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:55:57,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:55:58,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:55:58,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:55:58,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:55:58,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:55:58,044 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:55:58,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2020-12-22 05:55:58,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7351809f8/bbaca57766dd4ecebce9f646663b4cad/FLAG465b92281 [2020-12-22 05:55:58,971 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:58,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2020-12-22 05:55:59,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7351809f8/bbaca57766dd4ecebce9f646663b4cad/FLAG465b92281 [2020-12-22 05:55:59,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7351809f8/bbaca57766dd4ecebce9f646663b4cad [2020-12-22 05:55:59,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:59,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:59,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:59,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:59,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:59,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:59" (1/1) ... [2020-12-22 05:55:59,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ccbe3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:59, skipping insertion in model container [2020-12-22 05:55:59,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:59" (1/1) ... [2020-12-22 05:55:59,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:59,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:59,933 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/product-lines/elevator_spec14_product24.cil.c[71355,71368] [2020-12-22 05:55:59,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:59,947 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:56:00,114 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/product-lines/elevator_spec14_product24.cil.c[71355,71368] [2020-12-22 05:56:00,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:56:00,180 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:56:00,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00 WrapperNode [2020-12-22 05:56:00,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:56:00,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:56:00,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:56:00,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:56:00,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:00,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:56:01,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:56:01,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:56:01,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:56:01,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:02,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:02,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:02,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:03,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:56:03,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:56:03,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:56:03,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:56:03,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (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 05:56:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:56:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:56:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:56:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:56:52,689 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:56:52,689 INFO L299 CfgBuilder]: Removed 3823 assume(true) statements. [2020-12-22 05:56:52,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:52 BoogieIcfgContainer [2020-12-22 05:56:52,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:56:52,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:56:52,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:56:52,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:56:52,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:59" (1/3) ... [2020-12-22 05:56:52,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b65483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:52, skipping insertion in model container [2020-12-22 05:56:52,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (2/3) ... [2020-12-22 05:56:52,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b65483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:52, skipping insertion in model container [2020-12-22 05:56:52,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:52" (3/3) ... [2020-12-22 05:56:52,716 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product24.cil.c [2020-12-22 05:56:52,723 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:56:52,734 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:56:52,753 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:56:52,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:56:52,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:56:52,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:56:52,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:56:52,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:56:52,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:56:52,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:56:52,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:56:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16947 states. [2020-12-22 05:56:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:56:53,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:53,068 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] [2020-12-22 05:56:53,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:53,075 INFO L82 PathProgramCache]: Analyzing trace with hash -174955907, now seen corresponding path program 1 times [2020-12-22 05:56:53,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:53,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096629268] [2020-12-22 05:56:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:53,590 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 05:56:53,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096629268] [2020-12-22 05:56:53,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:53,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:53,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712604540] [2020-12-22 05:56:53,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:53,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:53,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:53,616 INFO L87 Difference]: Start difference. First operand 16947 states. Second operand 3 states. [2020-12-22 05:56:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:54,651 INFO L93 Difference]: Finished difference Result 40694 states and 76886 transitions. [2020-12-22 05:56:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:54,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 05:56:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:54,874 INFO L225 Difference]: With dead ends: 40694 [2020-12-22 05:56:54,874 INFO L226 Difference]: Without dead ends: 23751 [2020-12-22 05:56:54,919 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 05:56:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23751 states. [2020-12-22 05:56:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23751 to 16943. [2020-12-22 05:56:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16943 states. [2020-12-22 05:56:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16943 states to 16943 states and 31999 transitions. [2020-12-22 05:56:56,001 INFO L78 Accepts]: Start accepts. Automaton has 16943 states and 31999 transitions. Word has length 27 [2020-12-22 05:56:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:56,001 INFO L481 AbstractCegarLoop]: Abstraction has 16943 states and 31999 transitions. [2020-12-22 05:56:56,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 16943 states and 31999 transitions. [2020-12-22 05:56:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:56:56,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:56,011 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] [2020-12-22 05:56:56,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:56:56,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash 977459209, now seen corresponding path program 1 times [2020-12-22 05:56:56,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:56,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803429495] [2020-12-22 05:56:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:56,210 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 05:56:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803429495] [2020-12-22 05:56:56,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:56,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:56:56,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945123933] [2020-12-22 05:56:56,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:56,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:56,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:56,217 INFO L87 Difference]: Start difference. First operand 16943 states and 31999 transitions. Second operand 6 states. [2020-12-22 05:56:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:58,555 INFO L93 Difference]: Finished difference Result 47412 states and 89546 transitions. [2020-12-22 05:56:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:58,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-22 05:56:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:58,672 INFO L225 Difference]: With dead ends: 47412 [2020-12-22 05:56:58,672 INFO L226 Difference]: Without dead ends: 30511 [2020-12-22 05:56:58,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:56:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30511 states. [2020-12-22 05:56:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30511 to 16939. [2020-12-22 05:56:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16939 states. [2020-12-22 05:56:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16939 states to 16939 states and 31988 transitions. [2020-12-22 05:56:59,623 INFO L78 Accepts]: Start accepts. Automaton has 16939 states and 31988 transitions. Word has length 32 [2020-12-22 05:56:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:59,623 INFO L481 AbstractCegarLoop]: Abstraction has 16939 states and 31988 transitions. [2020-12-22 05:56:59,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 16939 states and 31988 transitions. [2020-12-22 05:56:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:56:59,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:59,626 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] [2020-12-22 05:56:59,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:56:59,627 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1400455191, now seen corresponding path program 1 times [2020-12-22 05:56:59,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994306178] [2020-12-22 05:56:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:59,754 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 05:56:59,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994306178] [2020-12-22 05:56:59,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:59,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:59,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676919230] [2020-12-22 05:56:59,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:59,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:59,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:59,758 INFO L87 Difference]: Start difference. First operand 16939 states and 31988 transitions. Second operand 4 states. [2020-12-22 05:57:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:01,841 INFO L93 Difference]: Finished difference Result 54182 states and 102322 transitions. [2020-12-22 05:57:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:01,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 05:57:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:02,068 INFO L225 Difference]: With dead ends: 54182 [2020-12-22 05:57:02,068 INFO L226 Difference]: Without dead ends: 37285 [2020-12-22 05:57:02,095 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 05:57:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37285 states. [2020-12-22 05:57:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37285 to 16939. [2020-12-22 05:57:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16939 states. [2020-12-22 05:57:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16939 states to 16939 states and 31984 transitions. [2020-12-22 05:57:02,899 INFO L78 Accepts]: Start accepts. Automaton has 16939 states and 31984 transitions. Word has length 33 [2020-12-22 05:57:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:02,906 INFO L481 AbstractCegarLoop]: Abstraction has 16939 states and 31984 transitions. [2020-12-22 05:57:02,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 16939 states and 31984 transitions. [2020-12-22 05:57:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:57:02,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:02,910 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] [2020-12-22 05:57:02,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:57:02,911 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1776630266, now seen corresponding path program 1 times [2020-12-22 05:57:02,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:02,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448687977] [2020-12-22 05:57:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:03,017 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 05:57:03,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448687977] [2020-12-22 05:57:03,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:03,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:03,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475110466] [2020-12-22 05:57:03,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:03,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:03,021 INFO L87 Difference]: Start difference. First operand 16939 states and 31984 transitions. Second operand 4 states. [2020-12-22 05:57:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:04,440 INFO L93 Difference]: Finished difference Result 40638 states and 76746 transitions. [2020-12-22 05:57:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:04,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 05:57:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:04,517 INFO L225 Difference]: With dead ends: 40638 [2020-12-22 05:57:04,518 INFO L226 Difference]: Without dead ends: 23741 [2020-12-22 05:57:04,544 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 05:57:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23741 states. [2020-12-22 05:57:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23741 to 16939. [2020-12-22 05:57:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16939 states. [2020-12-22 05:57:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16939 states to 16939 states and 31975 transitions. [2020-12-22 05:57:05,306 INFO L78 Accepts]: Start accepts. Automaton has 16939 states and 31975 transitions. Word has length 34 [2020-12-22 05:57:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:05,307 INFO L481 AbstractCegarLoop]: Abstraction has 16939 states and 31975 transitions. [2020-12-22 05:57:05,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 16939 states and 31975 transitions. [2020-12-22 05:57:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:57:05,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:05,309 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] [2020-12-22 05:57:05,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:57:05,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:05,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:05,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1243550172, now seen corresponding path program 1 times [2020-12-22 05:57:05,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:05,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504481102] [2020-12-22 05:57:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:05,385 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 05:57:05,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504481102] [2020-12-22 05:57:05,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:05,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:05,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961110833] [2020-12-22 05:57:05,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:05,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:05,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:05,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:05,388 INFO L87 Difference]: Start difference. First operand 16939 states and 31975 transitions. Second operand 4 states. [2020-12-22 05:57:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:06,882 INFO L93 Difference]: Finished difference Result 40638 states and 76728 transitions. [2020-12-22 05:57:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:06,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 05:57:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:06,979 INFO L225 Difference]: With dead ends: 40638 [2020-12-22 05:57:06,980 INFO L226 Difference]: Without dead ends: 23741 [2020-12-22 05:57:07,000 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 05:57:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23741 states. [2020-12-22 05:57:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23741 to 16939. [2020-12-22 05:57:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16939 states. [2020-12-22 05:57:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16939 states to 16939 states and 31966 transitions. [2020-12-22 05:57:07,698 INFO L78 Accepts]: Start accepts. Automaton has 16939 states and 31966 transitions. Word has length 35 [2020-12-22 05:57:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:07,699 INFO L481 AbstractCegarLoop]: Abstraction has 16939 states and 31966 transitions. [2020-12-22 05:57:07,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 16939 states and 31966 transitions. [2020-12-22 05:57:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:57:07,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:07,700 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] [2020-12-22 05:57:07,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:57:07,700 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash -650542684, now seen corresponding path program 1 times [2020-12-22 05:57:07,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:07,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391410481] [2020-12-22 05:57:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:07,792 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 05:57:07,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391410481] [2020-12-22 05:57:07,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:07,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:07,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361695560] [2020-12-22 05:57:07,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:07,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:07,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:07,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:07,795 INFO L87 Difference]: Start difference. First operand 16939 states and 31966 transitions. Second operand 4 states. [2020-12-22 05:57:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:09,061 INFO L93 Difference]: Finished difference Result 47389 states and 89460 transitions. [2020-12-22 05:57:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:09,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 05:57:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:09,113 INFO L225 Difference]: With dead ends: 47389 [2020-12-22 05:57:09,113 INFO L226 Difference]: Without dead ends: 30471 [2020-12-22 05:57:09,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:57:09,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30471 states. [2020-12-22 05:57:09,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30471 to 16921. [2020-12-22 05:57:09,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16921 states. [2020-12-22 05:57:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16921 states to 16921 states and 31935 transitions. [2020-12-22 05:57:09,973 INFO L78 Accepts]: Start accepts. Automaton has 16921 states and 31935 transitions. Word has length 35 [2020-12-22 05:57:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:09,975 INFO L481 AbstractCegarLoop]: Abstraction has 16921 states and 31935 transitions. [2020-12-22 05:57:09,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 16921 states and 31935 transitions. [2020-12-22 05:57:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:57:09,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:09,976 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] [2020-12-22 05:57:09,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:57:09,977 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1706636385, now seen corresponding path program 1 times [2020-12-22 05:57:09,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:09,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015875560] [2020-12-22 05:57:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:10,070 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 05:57:10,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015875560] [2020-12-22 05:57:10,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:10,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:10,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291023177] [2020-12-22 05:57:10,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:10,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:10,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:10,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:10,073 INFO L87 Difference]: Start difference. First operand 16921 states and 31935 transitions. Second operand 4 states. [2020-12-22 05:57:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:11,503 INFO L93 Difference]: Finished difference Result 40602 states and 76645 transitions. [2020-12-22 05:57:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:11,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 05:57:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:11,540 INFO L225 Difference]: With dead ends: 40602 [2020-12-22 05:57:11,540 INFO L226 Difference]: Without dead ends: 23702 [2020-12-22 05:57:11,558 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 05:57:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23702 states. [2020-12-22 05:57:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23702 to 16921. [2020-12-22 05:57:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16921 states. [2020-12-22 05:57:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16921 states to 16921 states and 31929 transitions. [2020-12-22 05:57:12,429 INFO L78 Accepts]: Start accepts. Automaton has 16921 states and 31929 transitions. Word has length 36 [2020-12-22 05:57:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:12,430 INFO L481 AbstractCegarLoop]: Abstraction has 16921 states and 31929 transitions. [2020-12-22 05:57:12,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 16921 states and 31929 transitions. [2020-12-22 05:57:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:57:12,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:12,431 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] [2020-12-22 05:57:12,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:57:12,431 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:12,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2017255329, now seen corresponding path program 1 times [2020-12-22 05:57:12,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:12,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265041853] [2020-12-22 05:57:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:12,494 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 05:57:12,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265041853] [2020-12-22 05:57:12,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:12,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:12,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664350733] [2020-12-22 05:57:12,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:12,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:12,496 INFO L87 Difference]: Start difference. First operand 16921 states and 31929 transitions. Second operand 4 states. [2020-12-22 05:57:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:13,659 INFO L93 Difference]: Finished difference Result 40602 states and 76633 transitions. [2020-12-22 05:57:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:13,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 05:57:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:13,691 INFO L225 Difference]: With dead ends: 40602 [2020-12-22 05:57:13,692 INFO L226 Difference]: Without dead ends: 23702 [2020-12-22 05:57:13,706 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 05:57:13,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23702 states. [2020-12-22 05:57:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23702 to 16921. [2020-12-22 05:57:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16921 states. [2020-12-22 05:57:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16921 states to 16921 states and 31923 transitions. [2020-12-22 05:57:14,570 INFO L78 Accepts]: Start accepts. Automaton has 16921 states and 31923 transitions. Word has length 37 [2020-12-22 05:57:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:14,571 INFO L481 AbstractCegarLoop]: Abstraction has 16921 states and 31923 transitions. [2020-12-22 05:57:14,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 16921 states and 31923 transitions. [2020-12-22 05:57:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:57:14,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:14,572 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] [2020-12-22 05:57:14,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:57:14,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash 116646650, now seen corresponding path program 1 times [2020-12-22 05:57:14,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:14,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641541922] [2020-12-22 05:57:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:14,635 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 05:57:14,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641541922] [2020-12-22 05:57:14,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:14,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:14,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813447025] [2020-12-22 05:57:14,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:14,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:14,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:14,638 INFO L87 Difference]: Start difference. First operand 16921 states and 31923 transitions. Second operand 3 states. [2020-12-22 05:57:15,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:15,703 INFO L93 Difference]: Finished difference Result 40593 states and 76610 transitions. [2020-12-22 05:57:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:15,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 05:57:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:15,733 INFO L225 Difference]: With dead ends: 40593 [2020-12-22 05:57:15,733 INFO L226 Difference]: Without dead ends: 23693 [2020-12-22 05:57:15,743 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 05:57:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23693 states. [2020-12-22 05:57:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23693 to 16921. [2020-12-22 05:57:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16921 states. [2020-12-22 05:57:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16921 states to 16921 states and 31922 transitions. [2020-12-22 05:57:16,363 INFO L78 Accepts]: Start accepts. Automaton has 16921 states and 31922 transitions. Word has length 38 [2020-12-22 05:57:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:16,363 INFO L481 AbstractCegarLoop]: Abstraction has 16921 states and 31922 transitions. [2020-12-22 05:57:16,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 16921 states and 31922 transitions. [2020-12-22 05:57:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:57:16,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:16,365 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] [2020-12-22 05:57:16,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:57:16,365 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:16,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:16,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2110791356, now seen corresponding path program 1 times [2020-12-22 05:57:16,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:16,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194695527] [2020-12-22 05:57:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:16,460 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 05:57:16,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194695527] [2020-12-22 05:57:16,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:16,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:57:16,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929824935] [2020-12-22 05:57:16,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:57:16,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:16,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:57:16,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:16,463 INFO L87 Difference]: Start difference. First operand 16921 states and 31922 transitions. Second operand 7 states. [2020-12-22 05:57:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:18,733 INFO L93 Difference]: Finished difference Result 54153 states and 102199 transitions. [2020-12-22 05:57:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:18,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-22 05:57:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:18,784 INFO L225 Difference]: With dead ends: 54153 [2020-12-22 05:57:18,785 INFO L226 Difference]: Without dead ends: 37259 [2020-12-22 05:57:18,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:57:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37259 states. [2020-12-22 05:57:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37259 to 16923. [2020-12-22 05:57:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16923 states. [2020-12-22 05:57:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 31923 transitions. [2020-12-22 05:57:19,525 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 31923 transitions. Word has length 38 [2020-12-22 05:57:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:19,526 INFO L481 AbstractCegarLoop]: Abstraction has 16923 states and 31923 transitions. [2020-12-22 05:57:19,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:57:19,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 31923 transitions. [2020-12-22 05:57:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:57:19,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:19,527 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] [2020-12-22 05:57:19,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:57:19,527 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:19,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:19,528 INFO L82 PathProgramCache]: Analyzing trace with hash -155097142, now seen corresponding path program 1 times [2020-12-22 05:57:19,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:19,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872580108] [2020-12-22 05:57:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:19,635 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 05:57:19,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872580108] [2020-12-22 05:57:19,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:19,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:57:19,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868246747] [2020-12-22 05:57:19,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:19,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:19,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:19,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:19,639 INFO L87 Difference]: Start difference. First operand 16923 states and 31923 transitions. Second operand 3 states. [2020-12-22 05:57:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:22,013 INFO L93 Difference]: Finished difference Result 45581 states and 86021 transitions. [2020-12-22 05:57:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:22,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 05:57:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:22,056 INFO L225 Difference]: With dead ends: 45581 [2020-12-22 05:57:22,056 INFO L226 Difference]: Without dead ends: 32027 [2020-12-22 05:57:22,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:57:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32027 states. [2020-12-22 05:57:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32027 to 27065. [2020-12-22 05:57:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27065 states. [2020-12-22 05:57:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27065 states to 27065 states and 51013 transitions. [2020-12-22 05:57:23,251 INFO L78 Accepts]: Start accepts. Automaton has 27065 states and 51013 transitions. Word has length 39 [2020-12-22 05:57:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:23,252 INFO L481 AbstractCegarLoop]: Abstraction has 27065 states and 51013 transitions. [2020-12-22 05:57:23,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 27065 states and 51013 transitions. [2020-12-22 05:57:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:57:23,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:23,258 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] [2020-12-22 05:57:23,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:57:23,258 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:23,259 INFO L82 PathProgramCache]: Analyzing trace with hash 617069500, now seen corresponding path program 1 times [2020-12-22 05:57:23,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:23,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481826716] [2020-12-22 05:57:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:23,338 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 05:57:23,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481826716] [2020-12-22 05:57:23,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:23,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:23,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057051482] [2020-12-22 05:57:23,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:23,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:23,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:23,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:23,340 INFO L87 Difference]: Start difference. First operand 27065 states and 51013 transitions. Second operand 5 states. [2020-12-22 05:57:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:25,272 INFO L93 Difference]: Finished difference Result 62063 states and 116529 transitions. [2020-12-22 05:57:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:57:25,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 05:57:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:25,318 INFO L225 Difference]: With dead ends: 62063 [2020-12-22 05:57:25,318 INFO L226 Difference]: Without dead ends: 36179 [2020-12-22 05:57:25,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:57:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36179 states. [2020-12-22 05:57:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36179 to 25018. [2020-12-22 05:57:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25018 states. [2020-12-22 05:57:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 46939 transitions. [2020-12-22 05:57:26,495 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 46939 transitions. Word has length 58 [2020-12-22 05:57:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:26,495 INFO L481 AbstractCegarLoop]: Abstraction has 25018 states and 46939 transitions. [2020-12-22 05:57:26,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 46939 transitions. [2020-12-22 05:57:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:57:26,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:26,497 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] [2020-12-22 05:57:26,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:57:26,498 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:26,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:26,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2062438738, now seen corresponding path program 1 times [2020-12-22 05:57:26,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:26,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146217360] [2020-12-22 05:57:26,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:26,605 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 05:57:26,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146217360] [2020-12-22 05:57:26,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:26,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:26,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824070988] [2020-12-22 05:57:26,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:26,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:26,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:26,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:26,608 INFO L87 Difference]: Start difference. First operand 25018 states and 46939 transitions. Second operand 4 states. [2020-12-22 05:57:45,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:45,235 INFO L93 Difference]: Finished difference Result 64926 states and 122434 transitions. [2020-12-22 05:57:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:45,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:57:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:45,296 INFO L225 Difference]: With dead ends: 64926 [2020-12-22 05:57:45,296 INFO L226 Difference]: Without dead ends: 39944 [2020-12-22 05:57:45,325 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 05:57:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39944 states. [2020-12-22 05:57:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39944 to 25018. [2020-12-22 05:57:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25018 states. [2020-12-22 05:57:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 46865 transitions. [2020-12-22 05:57:46,370 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 46865 transitions. Word has length 59 [2020-12-22 05:57:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:46,370 INFO L481 AbstractCegarLoop]: Abstraction has 25018 states and 46865 transitions. [2020-12-22 05:57:46,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 46865 transitions. [2020-12-22 05:57:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:57:46,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:46,373 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] [2020-12-22 05:57:46,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:57:46,374 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash 369273585, now seen corresponding path program 1 times [2020-12-22 05:57:46,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:46,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975638693] [2020-12-22 05:57:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:46,460 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 05:57:46,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975638693] [2020-12-22 05:57:46,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:46,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:46,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328189047] [2020-12-22 05:57:46,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:46,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:46,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:46,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:46,462 INFO L87 Difference]: Start difference. First operand 25018 states and 46865 transitions. Second operand 4 states. [2020-12-22 05:58:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:05,084 INFO L93 Difference]: Finished difference Result 64926 states and 122287 transitions. [2020-12-22 05:58:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:05,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:58:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:05,134 INFO L225 Difference]: With dead ends: 64926 [2020-12-22 05:58:05,134 INFO L226 Difference]: Without dead ends: 39944 [2020-12-22 05:58:05,154 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 05:58:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39944 states. [2020-12-22 05:58:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39944 to 25018. [2020-12-22 05:58:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25018 states. [2020-12-22 05:58:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 46791 transitions. [2020-12-22 05:58:06,358 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 46791 transitions. Word has length 62 [2020-12-22 05:58:06,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:06,358 INFO L481 AbstractCegarLoop]: Abstraction has 25018 states and 46791 transitions. [2020-12-22 05:58:06,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 46791 transitions. [2020-12-22 05:58:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:58:06,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:06,367 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] [2020-12-22 05:58:06,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:58:06,368 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash -87893545, now seen corresponding path program 1 times [2020-12-22 05:58:06,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:06,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14718805] [2020-12-22 05:58:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:06,479 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 05:58:06,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14718805] [2020-12-22 05:58:06,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:06,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:06,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831900109] [2020-12-22 05:58:06,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:06,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:06,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:06,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:06,481 INFO L87 Difference]: Start difference. First operand 25018 states and 46791 transitions. Second operand 4 states. [2020-12-22 05:58:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:25,274 INFO L93 Difference]: Finished difference Result 64926 states and 122140 transitions. [2020-12-22 05:58:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:25,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:58:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:25,321 INFO L225 Difference]: With dead ends: 64926 [2020-12-22 05:58:25,321 INFO L226 Difference]: Without dead ends: 39944 [2020-12-22 05:58:25,337 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 05:58:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39944 states. [2020-12-22 05:58:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39944 to 25018. [2020-12-22 05:58:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25018 states. [2020-12-22 05:58:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 46717 transitions. [2020-12-22 05:58:26,401 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 46717 transitions. Word has length 65 [2020-12-22 05:58:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:26,401 INFO L481 AbstractCegarLoop]: Abstraction has 25018 states and 46717 transitions. [2020-12-22 05:58:26,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 46717 transitions. [2020-12-22 05:58:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:58:26,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:26,405 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] [2020-12-22 05:58:26,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:58:26,405 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:26,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1602098924, now seen corresponding path program 1 times [2020-12-22 05:58:26,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:26,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877354816] [2020-12-22 05:58:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:26,537 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 05:58:26,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877354816] [2020-12-22 05:58:26,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:26,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:26,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822220597] [2020-12-22 05:58:26,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:26,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:26,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:26,539 INFO L87 Difference]: Start difference. First operand 25018 states and 46717 transitions. Second operand 4 states. [2020-12-22 05:58:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:45,671 INFO L93 Difference]: Finished difference Result 64926 states and 121993 transitions. [2020-12-22 05:58:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:45,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 05:58:45,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:45,720 INFO L225 Difference]: With dead ends: 64926 [2020-12-22 05:58:45,720 INFO L226 Difference]: Without dead ends: 39944 [2020-12-22 05:58:45,740 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 05:58:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39944 states. [2020-12-22 05:58:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39944 to 25018. [2020-12-22 05:58:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25018 states. [2020-12-22 05:58:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 46643 transitions. [2020-12-22 05:58:46,886 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 46643 transitions. Word has length 68 [2020-12-22 05:58:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,887 INFO L481 AbstractCegarLoop]: Abstraction has 25018 states and 46643 transitions. [2020-12-22 05:58:46,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 46643 transitions. [2020-12-22 05:58:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:58:46,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,907 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] [2020-12-22 05:58:46,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:58:46,907 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,907 INFO L82 PathProgramCache]: Analyzing trace with hash -676991268, now seen corresponding path program 1 times [2020-12-22 05:58:46,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23107425] [2020-12-22 05:58:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:46,965 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 05:58:46,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23107425] [2020-12-22 05:58:46,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:46,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:46,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629304924] [2020-12-22 05:58:46,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:46,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:46,967 INFO L87 Difference]: Start difference. First operand 25018 states and 46643 transitions. Second operand 3 states. [2020-12-22 05:58:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:49,735 INFO L93 Difference]: Finished difference Result 68988 states and 128665 transitions. [2020-12-22 05:58:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:49,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 05:58:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:49,794 INFO L225 Difference]: With dead ends: 68988 [2020-12-22 05:58:49,795 INFO L226 Difference]: Without dead ends: 46930 [2020-12-22 05:58:49,813 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 05:58:49,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46930 states. [2020-12-22 05:58:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46930 to 46892. [2020-12-22 05:58:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46892 states. [2020-12-22 05:58:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46892 states to 46892 states and 87402 transitions. [2020-12-22 05:58:51,830 INFO L78 Accepts]: Start accepts. Automaton has 46892 states and 87402 transitions. Word has length 71 [2020-12-22 05:58:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,830 INFO L481 AbstractCegarLoop]: Abstraction has 46892 states and 87402 transitions. [2020-12-22 05:58:51,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 46892 states and 87402 transitions. [2020-12-22 05:58:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:58:51,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,834 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] [2020-12-22 05:58:51,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:58:51,834 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash 938143288, now seen corresponding path program 1 times [2020-12-22 05:58:51,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894769313] [2020-12-22 05:58:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,911 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 05:58:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894769313] [2020-12-22 05:58:51,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:51,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549353002] [2020-12-22 05:58:51,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:51,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:51,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:51,913 INFO L87 Difference]: Start difference. First operand 46892 states and 87402 transitions. Second operand 5 states. [2020-12-22 05:58:58,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:58,159 INFO L93 Difference]: Finished difference Result 167468 states and 312926 transitions. [2020-12-22 05:58:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:58,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:58:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:58,398 INFO L225 Difference]: With dead ends: 167468 [2020-12-22 05:58:58,399 INFO L226 Difference]: Without dead ends: 128814 [2020-12-22 05:58:58,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:58:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128814 states. [2020-12-22 05:59:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128814 to 46892. [2020-12-22 05:59:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46892 states. [2020-12-22 05:59:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46892 states to 46892 states and 87356 transitions. [2020-12-22 05:59:01,558 INFO L78 Accepts]: Start accepts. Automaton has 46892 states and 87356 transitions. Word has length 72 [2020-12-22 05:59:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:01,559 INFO L481 AbstractCegarLoop]: Abstraction has 46892 states and 87356 transitions. [2020-12-22 05:59:01,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 46892 states and 87356 transitions. [2020-12-22 05:59:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:59:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:01,565 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] [2020-12-22 05:59:01,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:59:01,565 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash -278756242, now seen corresponding path program 1 times [2020-12-22 05:59:01,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:01,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884918931] [2020-12-22 05:59:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:01,632 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 05:59:01,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884918931] [2020-12-22 05:59:01,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:01,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:01,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488602479] [2020-12-22 05:59:01,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:01,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:01,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:01,636 INFO L87 Difference]: Start difference. First operand 46892 states and 87356 transitions. Second operand 4 states. [2020-12-22 05:59:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:06,009 INFO L93 Difference]: Finished difference Result 115191 states and 214616 transitions. [2020-12-22 05:59:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:06,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 05:59:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:06,118 INFO L225 Difference]: With dead ends: 115191 [2020-12-22 05:59:06,118 INFO L226 Difference]: Without dead ends: 71887 [2020-12-22 05:59:06,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:59:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71887 states. [2020-12-22 05:59:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71887 to 46978. [2020-12-22 05:59:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46978 states. [2020-12-22 05:59:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46978 states to 46978 states and 87442 transitions. [2020-12-22 05:59:08,831 INFO L78 Accepts]: Start accepts. Automaton has 46978 states and 87442 transitions. Word has length 95 [2020-12-22 05:59:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:08,832 INFO L481 AbstractCegarLoop]: Abstraction has 46978 states and 87442 transitions. [2020-12-22 05:59:08,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 46978 states and 87442 transitions. [2020-12-22 05:59:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 05:59:08,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:08,838 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] [2020-12-22 05:59:08,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:59:08,838 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash -590587827, now seen corresponding path program 1 times [2020-12-22 05:59:08,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:08,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732048014] [2020-12-22 05:59:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:09,067 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 05:59:09,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732048014] [2020-12-22 05:59:09,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:09,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:09,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425810334] [2020-12-22 05:59:09,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:09,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:09,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:09,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:09,069 INFO L87 Difference]: Start difference. First operand 46978 states and 87442 transitions. Second operand 5 states. [2020-12-22 05:59:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:20,408 INFO L93 Difference]: Finished difference Result 104019 states and 193444 transitions. [2020-12-22 05:59:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:20,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 05:59:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:20,517 INFO L225 Difference]: With dead ends: 104019 [2020-12-22 05:59:20,518 INFO L226 Difference]: Without dead ends: 62255 [2020-12-22 05:59:20,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 05:59:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62255 states. [2020-12-22 05:59:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62255 to 46978. [2020-12-22 05:59:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46978 states. [2020-12-22 05:59:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46978 states to 46978 states and 86592 transitions. [2020-12-22 05:59:23,297 INFO L78 Accepts]: Start accepts. Automaton has 46978 states and 86592 transitions. Word has length 98 [2020-12-22 05:59:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:23,297 INFO L481 AbstractCegarLoop]: Abstraction has 46978 states and 86592 transitions. [2020-12-22 05:59:23,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 46978 states and 86592 transitions. [2020-12-22 05:59:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 05:59:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:23,304 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] [2020-12-22 05:59:23,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:59:23,304 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash 469045324, now seen corresponding path program 1 times [2020-12-22 05:59:23,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:23,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476192836] [2020-12-22 05:59:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:23,383 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 05:59:23,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476192836] [2020-12-22 05:59:23,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:23,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:23,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062847682] [2020-12-22 05:59:23,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:23,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:23,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:23,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:23,387 INFO L87 Difference]: Start difference. First operand 46978 states and 86592 transitions. Second operand 3 states. [2020-12-22 05:59:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:34,105 INFO L93 Difference]: Finished difference Result 121793 states and 224222 transitions. [2020-12-22 05:59:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:34,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-22 05:59:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:34,227 INFO L225 Difference]: With dead ends: 121793 [2020-12-22 05:59:34,227 INFO L226 Difference]: Without dead ends: 80489 [2020-12-22 05:59:34,266 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 05:59:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80489 states. [2020-12-22 05:59:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80489 to 46468. [2020-12-22 05:59:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46468 states. [2020-12-22 05:59:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46468 states to 46468 states and 85232 transitions. [2020-12-22 05:59:38,019 INFO L78 Accepts]: Start accepts. Automaton has 46468 states and 85232 transitions. Word has length 103 [2020-12-22 05:59:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:38,019 INFO L481 AbstractCegarLoop]: Abstraction has 46468 states and 85232 transitions. [2020-12-22 05:59:38,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 46468 states and 85232 transitions. [2020-12-22 05:59:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 05:59:38,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:38,028 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] [2020-12-22 05:59:38,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:59:38,029 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:38,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:38,029 INFO L82 PathProgramCache]: Analyzing trace with hash 652810043, now seen corresponding path program 1 times [2020-12-22 05:59:38,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:38,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407351513] [2020-12-22 05:59:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:38,133 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 05:59:38,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407351513] [2020-12-22 05:59:38,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:38,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407285580] [2020-12-22 05:59:38,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:38,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:38,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:38,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:38,136 INFO L87 Difference]: Start difference. First operand 46468 states and 85232 transitions. Second operand 3 states.