/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_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:33:55,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:33:55,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:33:56,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:33:56,050 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 00:33:56,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:33:56,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:33:56,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:33:56,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:33:56,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:33:56,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:33:56,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:33:56,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:33:56,065 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:33:56,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:33:56,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:33:56,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:33:56,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:33:56,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:33:56,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:33:56,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:33:56,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:33:56,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:33:56,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:33:56,067 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:33:56,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:33:56,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:33:56,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:33:56,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:33:56,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:33:56,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:33:56,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:33:56,284 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:33:56,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label31.c [2022-01-10 00:33:56,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11159bf22/4f74234e6a4a43fbb434c962108e9fdd/FLAG48c63d29b [2022-01-10 00:33:56,919 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:33:56,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label31.c [2022-01-10 00:33:56,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11159bf22/4f74234e6a4a43fbb434c962108e9fdd/FLAG48c63d29b [2022-01-10 00:33:57,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11159bf22/4f74234e6a4a43fbb434c962108e9fdd [2022-01-10 00:33:57,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:33:57,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:33:57,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:33:57,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:33:57,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:33:57,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:33:57" (1/1) ... [2022-01-10 00:33:57,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f565b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:57, skipping insertion in model container [2022-01-10 00:33:57,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:33:57" (1/1) ... [2022-01-10 00:33:57,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:33:57,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:33:57,403 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_label31.c[2748,2761] [2022-01-10 00:33:58,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:33:58,303 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:33:58,315 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_label31.c[2748,2761] [2022-01-10 00:33:58,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:33:58,912 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:33:58,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58 WrapperNode [2022-01-10 00:33:58,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:33:58,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:33:58,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:33:58,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:33:58,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:33:59,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:33:59,644 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-01-10 00:33:59,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:33:59,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:33:59,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:33:59,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:33:59,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:33:59,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:33:59,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:33:59,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:34:00,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:34:00,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:34:00,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:34:00,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:34:00,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:34:00,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:34:00,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:34:00,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (1/1) ... [2022-01-10 00:34:00,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:34:00,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:34:00,436 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 00:34:00,440 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 00:34:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:34:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:34:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:34:00,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:34:00,590 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:34:00,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:34:05,623 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:34:05,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:34:05,657 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:34:05,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:34:05 BoogieIcfgContainer [2022-01-10 00:34:05,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:34:05,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:34:05,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:34:05,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:34:05,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:33:57" (1/3) ... [2022-01-10 00:34:05,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dbb33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:34:05, skipping insertion in model container [2022-01-10 00:34:05,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:58" (2/3) ... [2022-01-10 00:34:05,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dbb33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:34:05, skipping insertion in model container [2022-01-10 00:34:05,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:34:05" (3/3) ... [2022-01-10 00:34:05,666 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label31.c [2022-01-10 00:34:05,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:34:05,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:34:05,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:34:05,725 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 00:34:05,725 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:34:05,758 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 00:34:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 00:34:05,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:05,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:05,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash 567305786, now seen corresponding path program 1 times [2022-01-10 00:34:05,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:05,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534214748] [2022-01-10 00:34:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:05,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:05,905 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 00:34:05,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534214748] [2022-01-10 00:34:05,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534214748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:05,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:05,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:34:05,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142401989] [2022-01-10 00:34:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:05,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:05,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:05,932 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 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 00:34:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:11,646 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-01-10 00:34:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:34:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-01-10 00:34:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:11,685 INFO L225 Difference]: With dead ends: 4975 [2022-01-10 00:34:11,685 INFO L226 Difference]: Without dead ends: 3163 [2022-01-10 00:34:11,696 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 00:34:11,698 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 1528 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:11,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 00:34:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-01-10 00:34:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-01-10 00:34:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 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 00:34:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-01-10 00:34:11,811 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 18 [2022-01-10 00:34:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:11,811 INFO L470 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-01-10 00:34:11,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 00:34:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-01-10 00:34:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 00:34:11,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:11,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:11,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:34:11,814 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1002020165, now seen corresponding path program 1 times [2022-01-10 00:34:11,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:11,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972347287] [2022-01-10 00:34:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:11,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:11,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:11,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972347287] [2022-01-10 00:34:11,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972347287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:11,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:11,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:34:11,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299717723] [2022-01-10 00:34:11,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:11,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:11,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:11,950 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 00:34:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:17,670 INFO L93 Difference]: Finished difference Result 9053 states and 14813 transitions. [2022-01-10 00:34:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:34:17,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 89 [2022-01-10 00:34:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:17,690 INFO L225 Difference]: With dead ends: 9053 [2022-01-10 00:34:17,691 INFO L226 Difference]: Without dead ends: 5932 [2022-01-10 00:34:17,701 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 00:34:17,702 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4265 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 4265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:17,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1544 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 4265 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 00:34:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-01-10 00:34:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5910. [2022-01-10 00:34:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.423421898798443) internal successors, (8411), 5909 states have internal predecessors, (8411), 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 00:34:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8411 transitions. [2022-01-10 00:34:17,897 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8411 transitions. Word has length 89 [2022-01-10 00:34:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:17,898 INFO L470 AbstractCegarLoop]: Abstraction has 5910 states and 8411 transitions. [2022-01-10 00:34:17,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 00:34:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8411 transitions. [2022-01-10 00:34:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 00:34:17,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:17,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:34:17,901 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:17,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1347274474, now seen corresponding path program 1 times [2022-01-10 00:34:17,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:17,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378191999] [2022-01-10 00:34:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:17,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:18,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:18,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378191999] [2022-01-10 00:34:18,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378191999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:18,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:18,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:34:18,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153281643] [2022-01-10 00:34:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:18,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:18,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:18,039 INFO L87 Difference]: Start difference. First operand 5910 states and 8411 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 00:34:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:23,027 INFO L93 Difference]: Finished difference Result 17505 states and 24942 transitions. [2022-01-10 00:34:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:34:23,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 115 [2022-01-10 00:34:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:23,059 INFO L225 Difference]: With dead ends: 17505 [2022-01-10 00:34:23,059 INFO L226 Difference]: Without dead ends: 11597 [2022-01-10 00:34:23,069 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 00:34:23,070 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 5657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:23,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 1806 Invalid, 5657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4227 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 00:34:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11597 states. [2022-01-10 00:34:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11597 to 11578. [2022-01-10 00:34:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 1.2801243845555843) internal successors, (14820), 11577 states have internal predecessors, (14820), 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 00:34:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 14820 transitions. [2022-01-10 00:34:23,271 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 14820 transitions. Word has length 115 [2022-01-10 00:34:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:23,272 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 14820 transitions. [2022-01-10 00:34:23,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 00:34:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 14820 transitions. [2022-01-10 00:34:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 00:34:23,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:23,278 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:23,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:34:23,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1229410558, now seen corresponding path program 1 times [2022-01-10 00:34:23,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:23,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077166680] [2022-01-10 00:34:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:23,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:23,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077166680] [2022-01-10 00:34:23,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077166680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:23,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:23,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:34:23,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459420621] [2022-01-10 00:34:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:23,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:23,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:23,387 INFO L87 Difference]: Start difference. First operand 11578 states and 14820 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 00:34:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:29,195 INFO L93 Difference]: Finished difference Result 34273 states and 43832 transitions. [2022-01-10 00:34:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:34:29,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 123 [2022-01-10 00:34:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:29,254 INFO L225 Difference]: With dead ends: 34273 [2022-01-10 00:34:29,254 INFO L226 Difference]: Without dead ends: 22697 [2022-01-10 00:34:29,269 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 00:34:29,270 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 2497 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 5120 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:29,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2497 Valid, 995 Invalid, 5554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5120 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 00:34:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22697 states. [2022-01-10 00:34:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22697 to 22694. [2022-01-10 00:34:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22694 states, 22693 states have (on average 1.238663905168995) internal successors, (28109), 22693 states have internal predecessors, (28109), 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 00:34:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22694 states to 22694 states and 28109 transitions. [2022-01-10 00:34:29,631 INFO L78 Accepts]: Start accepts. Automaton has 22694 states and 28109 transitions. Word has length 123 [2022-01-10 00:34:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:29,632 INFO L470 AbstractCegarLoop]: Abstraction has 22694 states and 28109 transitions. [2022-01-10 00:34:29,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 00:34:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 22694 states and 28109 transitions. [2022-01-10 00:34:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-01-10 00:34:29,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:29,638 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2022-01-10 00:34:29,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:34:29,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -579227508, now seen corresponding path program 1 times [2022-01-10 00:34:29,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:29,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703895521] [2022-01-10 00:34:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:29,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 00:34:29,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:29,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703895521] [2022-01-10 00:34:29,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703895521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:29,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:29,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:34:29,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303956863] [2022-01-10 00:34:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:29,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:34:29,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:34:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:34:29,919 INFO L87 Difference]: Start difference. First operand 22694 states and 28109 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 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 00:34:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:37,815 INFO L93 Difference]: Finished difference Result 57752 states and 69837 transitions. [2022-01-10 00:34:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:34:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 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 385 [2022-01-10 00:34:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:37,878 INFO L225 Difference]: With dead ends: 57752 [2022-01-10 00:34:37,879 INFO L226 Difference]: Without dead ends: 35060 [2022-01-10 00:34:37,905 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 00:34:37,907 INFO L933 BasicCegarLoop]: 1805 mSDtfsCounter, 3755 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 9454 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 9699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 9454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:37,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 2160 Invalid, 9699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 9454 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-01-10 00:34:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35060 states. [2022-01-10 00:34:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35060 to 32288. [2022-01-10 00:34:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32288 states, 32287 states have (on average 1.1912844178771642) internal successors, (38463), 32287 states have internal predecessors, (38463), 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 00:34:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32288 states to 32288 states and 38463 transitions. [2022-01-10 00:34:38,326 INFO L78 Accepts]: Start accepts. Automaton has 32288 states and 38463 transitions. Word has length 385 [2022-01-10 00:34:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:38,327 INFO L470 AbstractCegarLoop]: Abstraction has 32288 states and 38463 transitions. [2022-01-10 00:34:38,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 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 00:34:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 32288 states and 38463 transitions. [2022-01-10 00:34:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-01-10 00:34:38,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:38,331 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2022-01-10 00:34:38,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:34:38,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:38,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1180083482, now seen corresponding path program 1 times [2022-01-10 00:34:38,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382562990] [2022-01-10 00:34:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:38,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:38,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:38,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382562990] [2022-01-10 00:34:38,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382562990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:38,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:38,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:34:38,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763742513] [2022-01-10 00:34:38,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:38,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:34:38,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:34:38,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:34:38,534 INFO L87 Difference]: Start difference. First operand 32288 states and 38463 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 00:34:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:43,463 INFO L93 Difference]: Finished difference Result 67335 states and 79703 transitions. [2022-01-10 00:34:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:34:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 413 [2022-01-10 00:34:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:43,558 INFO L225 Difference]: With dead ends: 67335 [2022-01-10 00:34:43,558 INFO L226 Difference]: Without dead ends: 35018 [2022-01-10 00:34:43,583 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 00:34:43,585 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 1153 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:43,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1955 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-10 00:34:43,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35018 states. [2022-01-10 00:34:43,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35018 to 35018. [2022-01-10 00:34:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35018 states, 35017 states have (on average 1.1765142645000999) internal successors, (41198), 35017 states have internal predecessors, (41198), 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 00:34:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35018 states to 35018 states and 41198 transitions. [2022-01-10 00:34:43,983 INFO L78 Accepts]: Start accepts. Automaton has 35018 states and 41198 transitions. Word has length 413 [2022-01-10 00:34:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:43,984 INFO L470 AbstractCegarLoop]: Abstraction has 35018 states and 41198 transitions. [2022-01-10 00:34:43,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 00:34:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 35018 states and 41198 transitions. [2022-01-10 00:34:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-01-10 00:34:43,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:43,990 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:43,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:34:43,990 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:43,991 INFO L85 PathProgramCache]: Analyzing trace with hash -546837300, now seen corresponding path program 1 times [2022-01-10 00:34:43,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:43,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68793274] [2022-01-10 00:34:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:43,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:44,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:44,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68793274] [2022-01-10 00:34:44,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68793274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:44,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:44,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:34:44,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124627858] [2022-01-10 00:34:44,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:44,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:44,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:44,469 INFO L87 Difference]: Start difference. First operand 35018 states and 41198 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 00:34:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:49,383 INFO L93 Difference]: Finished difference Result 78377 states and 94558 transitions. [2022-01-10 00:34:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:34:49,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 505 [2022-01-10 00:34:49,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:49,432 INFO L225 Difference]: With dead ends: 78377 [2022-01-10 00:34:49,433 INFO L226 Difference]: Without dead ends: 46091 [2022-01-10 00:34:49,444 INFO L932 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 [2022-01-10 00:34:49,447 INFO L933 BasicCegarLoop]: 2744 mSDtfsCounter, 1517 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4061 mSolverCounterSat, 1803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 5864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1803 IncrementalHoareTripleChecker+Valid, 4061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:49,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 2923 Invalid, 5864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1803 Valid, 4061 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-10 00:34:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46091 states. [2022-01-10 00:34:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46091 to 45986. [2022-01-10 00:34:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45986 states, 45985 states have (on average 1.167293682722627) internal successors, (53678), 45985 states have internal predecessors, (53678), 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 00:34:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45986 states to 45986 states and 53678 transitions. [2022-01-10 00:34:50,128 INFO L78 Accepts]: Start accepts. Automaton has 45986 states and 53678 transitions. Word has length 505 [2022-01-10 00:34:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:50,128 INFO L470 AbstractCegarLoop]: Abstraction has 45986 states and 53678 transitions. [2022-01-10 00:34:50,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 00:34:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 45986 states and 53678 transitions. [2022-01-10 00:34:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2022-01-10 00:34:50,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:50,141 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2022-01-10 00:34:50,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:34:50,142 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash 708835332, now seen corresponding path program 1 times [2022-01-10 00:34:50,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:50,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018348818] [2022-01-10 00:34:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:50,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-01-10 00:34:50,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018348818] [2022-01-10 00:34:50,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018348818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:50,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:34:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092686886] [2022-01-10 00:34:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:50,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:34:50,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:34:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:34:50,499 INFO L87 Difference]: Start difference. First operand 45986 states and 53678 transitions. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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 00:34:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:59,208 INFO L93 Difference]: Finished difference Result 146896 states and 174850 transitions. [2022-01-10 00:34:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:34:59,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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 717 [2022-01-10 00:34:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:59,442 INFO L225 Difference]: With dead ends: 146896 [2022-01-10 00:34:59,442 INFO L226 Difference]: Without dead ends: 103642 [2022-01-10 00:34:59,479 INFO L932 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 [2022-01-10 00:34:59,479 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 3329 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 8930 mSolverCounterSat, 2794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 11724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2794 IncrementalHoareTripleChecker+Valid, 8930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:59,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 1262 Invalid, 11724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2794 Valid, 8930 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-01-10 00:34:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103642 states. [2022-01-10 00:35:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103642 to 100736. [2022-01-10 00:35:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100736 states, 100735 states have (on average 1.1557849803941034) internal successors, (116428), 100735 states have internal predecessors, (116428), 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 00:35:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100736 states to 100736 states and 116428 transitions. [2022-01-10 00:35:00,490 INFO L78 Accepts]: Start accepts. Automaton has 100736 states and 116428 transitions. Word has length 717 [2022-01-10 00:35:00,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:35:00,492 INFO L470 AbstractCegarLoop]: Abstraction has 100736 states and 116428 transitions. [2022-01-10 00:35:00,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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 00:35:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 100736 states and 116428 transitions. [2022-01-10 00:35:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-01-10 00:35:00,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:35:00,497 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:00,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:35:00,498 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:35:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:35:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 781992777, now seen corresponding path program 1 times [2022-01-10 00:35:00,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:35:00,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30468616] [2022-01-10 00:35:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:00,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:35:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 31 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:35:01,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:35:01,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30468616] [2022-01-10 00:35:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30468616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:35:01,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729561767] [2022-01-10 00:35:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:01,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:35:01,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:35:01,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:35:01,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:35:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:01,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:35:01,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:35:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-01-10 00:35:02,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:35:02,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729561767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:35:02,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:35:02,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-01-10 00:35:02,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021883204] [2022-01-10 00:35:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:35:02,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:35:02,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:35:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:35:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:35:02,293 INFO L87 Difference]: Start difference. First operand 100736 states and 116428 transitions. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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)