/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:32:49,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:32:49,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:32:49,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:32:49,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:32:49,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:32:49,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:32:49,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:32:49,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:32:49,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:32:49,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:32:49,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:32:49,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:32:49,341 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:32:49,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:32:49,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:32:49,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:32:49,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:32:49,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:32:49,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:32:49,342 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:32:49,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:32:49,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:32:49,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:32:49,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:32:49,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:32:49,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:32:49,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:32:49,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:32:49,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:32:49,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:32:49,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:32:49,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:32:49,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:32:49,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:32:49,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:32:49,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:32:49,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:32:49,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:32:49,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:32:49,595 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:32:49,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2022-01-10 00:32:49,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40474edd6/4dbdfe21452548de84eb9c9c50b8b664/FLAGa505c3a7c [2022-01-10 00:32:50,469 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:32:50,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2022-01-10 00:32:50,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40474edd6/4dbdfe21452548de84eb9c9c50b8b664/FLAGa505c3a7c [2022-01-10 00:32:50,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40474edd6/4dbdfe21452548de84eb9c9c50b8b664 [2022-01-10 00:32:50,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:32:50,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:32:50,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:32:50,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:32:50,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:32:50,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:32:50" (1/1) ... [2022-01-10 00:32:50,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf93876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:50, skipping insertion in model container [2022-01-10 00:32:50,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:32:50" (1/1) ... [2022-01-10 00:32:50,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:32:51,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:32:51,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16.c[6966,6979] [2022-01-10 00:32:52,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:32:52,446 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:32:52,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16.c[6966,6979] [2022-01-10 00:32:53,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:32:53,252 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:32:53,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53 WrapperNode [2022-01-10 00:32:53,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:32:53,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:32:53,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:32:53,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:32:53,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:53,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,101 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-01-10 00:32:54,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:32:54,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:32:54,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:32:54,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:32:54,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:32:54,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:32:54,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:32:54,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:32:54,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (1/1) ... [2022-01-10 00:32:54,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:32:54,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:32:54,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:32:54,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:32:54,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:32:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:32:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:32:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:32:54,958 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:32:54,959 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:33:01,491 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:33:01,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:33:01,516 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:33:01,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:33:01 BoogieIcfgContainer [2022-01-10 00:33:01,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:33:01,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:33:01,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:33:01,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:33:01,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:32:50" (1/3) ... [2022-01-10 00:33:01,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f74399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:33:01, skipping insertion in model container [2022-01-10 00:33:01,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:32:53" (2/3) ... [2022-01-10 00:33:01,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f74399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:33:01, skipping insertion in model container [2022-01-10 00:33:01,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:33:01" (3/3) ... [2022-01-10 00:33:01,527 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label16.c [2022-01-10 00:33:01,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:33:01,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:33:01,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:33:01,591 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:33:01,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:33:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 00:33:01,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:33:01,639 INFO L514 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] [2022-01-10 00:33:01,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:33:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:33:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times [2022-01-10 00:33:01,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:33:01,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896028571] [2022-01-10 00:33:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:33:01,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:33:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:33:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:33:01,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:33:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896028571] [2022-01-10 00:33:01,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896028571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:33:01,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:33:01,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:33:01,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931640929] [2022-01-10 00:33:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:33:01,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:33:01,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:33:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:33:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:33:01,897 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:33:08,984 INFO L93 Difference]: Finished difference Result 4957 states and 9398 transitions. [2022-01-10 00:33:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:33:08,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 00:33:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:33:09,019 INFO L225 Difference]: With dead ends: 4957 [2022-01-10 00:33:09,019 INFO L226 Difference]: Without dead ends: 3129 [2022-01-10 00:33:09,026 INFO L932 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 [2022-01-10 00:33:09,028 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 1573 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:33:09,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-10 00:33:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-01-10 00:33:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108. [2022-01-10 00:33:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions. [2022-01-10 00:33:09,138 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 53 [2022-01-10 00:33:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:33:09,139 INFO L470 AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions. [2022-01-10 00:33:09,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions. [2022-01-10 00:33:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 00:33:09,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:33:09,143 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:33:09,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:33:09,143 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:33:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:33:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 65858692, now seen corresponding path program 1 times [2022-01-10 00:33:09,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:33:09,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145203699] [2022-01-10 00:33:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:33:09,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:33:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:33:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:33:09,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:33:09,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145203699] [2022-01-10 00:33:09,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145203699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:33:09,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:33:09,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:33:09,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435221866] [2022-01-10 00:33:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:33:09,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:33:09,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:33:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:33:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:33:09,320 INFO L87 Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:33:18,841 INFO L93 Difference]: Finished difference Result 10359 states and 16187 transitions. [2022-01-10 00:33:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:33:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-10 00:33:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:33:18,871 INFO L225 Difference]: With dead ends: 10359 [2022-01-10 00:33:18,871 INFO L226 Difference]: Without dead ends: 7253 [2022-01-10 00:33:18,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:33:18,877 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 4319 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4319 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 11004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:33:18,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4319 Valid, 1294 Invalid, 11004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1500 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-01-10 00:33:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-01-10 00:33:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249. [2022-01-10 00:33:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 1.4501931567328918) internal successors, (10511), 7248 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10511 transitions. [2022-01-10 00:33:19,036 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10511 transitions. Word has length 120 [2022-01-10 00:33:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:33:19,036 INFO L470 AbstractCegarLoop]: Abstraction has 7249 states and 10511 transitions. [2022-01-10 00:33:19,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10511 transitions. [2022-01-10 00:33:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-01-10 00:33:19,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:33:19,044 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:33:19,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:33:19,045 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:33:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:33:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash -252702516, now seen corresponding path program 1 times [2022-01-10 00:33:19,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:33:19,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849931159] [2022-01-10 00:33:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:33:19,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:33:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:33:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-10 00:33:19,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:33:19,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849931159] [2022-01-10 00:33:19,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849931159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:33:19,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:33:19,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:33:19,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567135967] [2022-01-10 00:33:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:33:19,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:33:19,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:33:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:33:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:33:19,384 INFO L87 Difference]: Start difference. First operand 7249 states and 10511 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:33:27,582 INFO L93 Difference]: Finished difference Result 17269 states and 24865 transitions. [2022-01-10 00:33:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:33:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2022-01-10 00:33:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:33:27,615 INFO L225 Difference]: With dead ends: 17269 [2022-01-10 00:33:27,615 INFO L226 Difference]: Without dead ends: 11387 [2022-01-10 00:33:27,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:33:27,622 INFO L933 BasicCegarLoop]: 1803 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:33:27,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 2157 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-01-10 00:33:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2022-01-10 00:33:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367. [2022-01-10 00:33:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.328523667077248) internal successors, (15100), 11366 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15100 transitions. [2022-01-10 00:33:27,825 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15100 transitions. Word has length 337 [2022-01-10 00:33:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:33:27,825 INFO L470 AbstractCegarLoop]: Abstraction has 11367 states and 15100 transitions. [2022-01-10 00:33:27,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:27,826 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15100 transitions. [2022-01-10 00:33:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-01-10 00:33:27,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:33:27,830 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:33:27,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:33:27,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:33:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:33:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash 658383526, now seen corresponding path program 1 times [2022-01-10 00:33:27,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:33:27,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849062398] [2022-01-10 00:33:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:33:27,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:33:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:33:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 00:33:28,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:33:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849062398] [2022-01-10 00:33:28,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849062398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:33:28,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:33:28,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:33:28,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642672508] [2022-01-10 00:33:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:33:28,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:33:28,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:33:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:33:28,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:33:28,101 INFO L87 Difference]: Start difference. First operand 11367 states and 15100 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:33:34,243 INFO L93 Difference]: Finished difference Result 20033 states and 27481 transitions. [2022-01-10 00:33:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:33:34,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2022-01-10 00:33:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:33:34,273 INFO L225 Difference]: With dead ends: 20033 [2022-01-10 00:33:34,273 INFO L226 Difference]: Without dead ends: 11367 [2022-01-10 00:33:34,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:33:34,285 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:33:34,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-10 00:33:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2022-01-10 00:33:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367. [2022-01-10 00:33:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.327379904979764) internal successors, (15087), 11366 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15087 transitions. [2022-01-10 00:33:34,463 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15087 transitions. Word has length 365 [2022-01-10 00:33:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:33:34,464 INFO L470 AbstractCegarLoop]: Abstraction has 11367 states and 15087 transitions. [2022-01-10 00:33:34,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:34,465 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15087 transitions. [2022-01-10 00:33:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-01-10 00:33:34,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:33:34,476 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:33:34,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:33:34,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:33:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:33:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 3636171, now seen corresponding path program 1 times [2022-01-10 00:33:34,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:33:34,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324201768] [2022-01-10 00:33:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:33:34,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:33:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:33:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 00:33:34,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:33:34,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324201768] [2022-01-10 00:33:34,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324201768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:33:34,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:33:34,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:33:34,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520550023] [2022-01-10 00:33:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:33:34,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:33:34,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:33:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:33:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:33:34,786 INFO L87 Difference]: Start difference. First operand 11367 states and 15087 transitions. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:33:40,166 INFO L93 Difference]: Finished difference Result 28418 states and 39498 transitions. [2022-01-10 00:33:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:33:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 609 [2022-01-10 00:33:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:33:40,199 INFO L225 Difference]: With dead ends: 28418 [2022-01-10 00:33:40,199 INFO L226 Difference]: Without dead ends: 19783 [2022-01-10 00:33:40,212 INFO L932 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 [2022-01-10 00:33:40,213 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:33:40,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-10 00:33:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-01-10 00:33:40,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 19765. [2022-01-10 00:33:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19765 states, 19764 states have (on average 1.2450414895770088) internal successors, (24607), 19764 states have internal predecessors, (24607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19765 states to 19765 states and 24607 transitions. [2022-01-10 00:33:40,459 INFO L78 Accepts]: Start accepts. Automaton has 19765 states and 24607 transitions. Word has length 609 [2022-01-10 00:33:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:33:40,461 INFO L470 AbstractCegarLoop]: Abstraction has 19765 states and 24607 transitions. [2022-01-10 00:33:40,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:33:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19765 states and 24607 transitions. [2022-01-10 00:33:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-01-10 00:33:40,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:33:40,474 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:33:40,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:33:40,474 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:33:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:33:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1274184982, now seen corresponding path program 1 times [2022-01-10 00:33:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:33:40,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894050340] [2022-01-10 00:33:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:33:40,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:33:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:33:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-10 00:33:40,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:33:40,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894050340] [2022-01-10 00:33:40,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894050340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:33:40,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:33:40,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:33:40,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811733091] [2022-01-10 00:33:40,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:33:40,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:33:40,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:33:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:33:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:33:40,733 INFO L87 Difference]: Start difference. First operand 19765 states and 24607 transitions. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)