/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/Problem17_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:26:58,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:26:58,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:26:58,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:26:58,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:26:58,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:26:58,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:26:58,198 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 00:26:58,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:26:58,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:26:58,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:26:58,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:26:58,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:26:58,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:26:58,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:26:58,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:26:58,212 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:26:58,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:26:58,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:26:58,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:26:58,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:26:58,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:26:58,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:26:58,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:26:58,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:26:58,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:26:58,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:26:58,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:26:58,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:26:58,519 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:26:58,519 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:26:58,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2022-01-10 00:26:58,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0309444/7a2f9194d950425f833bd7f848889c35/FLAG9fae667cb [2022-01-10 00:26:59,095 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:26:59,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2022-01-10 00:26:59,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0309444/7a2f9194d950425f833bd7f848889c35/FLAG9fae667cb [2022-01-10 00:26:59,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0309444/7a2f9194d950425f833bd7f848889c35 [2022-01-10 00:26:59,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:26:59,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:26:59,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:26:59,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:26:59,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:26:59,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:26:59" (1/1) ... [2022-01-10 00:26:59,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d64519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:59, skipping insertion in model container [2022-01-10 00:26:59,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:26:59" (1/1) ... [2022-01-10 00:26:59,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:26:59,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:26:59,852 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/Problem17_label55.c[1783,1796] [2022-01-10 00:27:00,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:27:00,339 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:27:00,355 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/Problem17_label55.c[1783,1796] [2022-01-10 00:27:00,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:27:00,590 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:27:00,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00 WrapperNode [2022-01-10 00:27:00,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:27:00,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:27:00,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:27:00,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:27:00,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:00,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:00,874 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:27:00,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:27:00,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:27:00,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:27:00,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:27:00,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:00,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:00,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:00,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:00,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:01,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:01,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:01,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:27:01,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:27:01,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:27:01,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:27:01,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (1/1) ... [2022-01-10 00:27:01,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:27:01,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:01,230 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 00:27:01,236 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 00:27:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:27:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:27:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:27:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:27:01,301 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:27:01,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:27:03,590 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:27:03,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:27:03,599 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:27:03,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:27:03 BoogieIcfgContainer [2022-01-10 00:27:03,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:27:03,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:27:03,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:27:03,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:27:03,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:26:59" (1/3) ... [2022-01-10 00:27:03,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e040ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:27:03, skipping insertion in model container [2022-01-10 00:27:03,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:00" (2/3) ... [2022-01-10 00:27:03,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e040ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:27:03, skipping insertion in model container [2022-01-10 00:27:03,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:27:03" (3/3) ... [2022-01-10 00:27:03,605 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label55.c [2022-01-10 00:27:03,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:27:03,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:27:03,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:27:03,643 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 00:27:03,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:27:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 00:27:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 00:27:03,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:03,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:03,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2022-01-10 00:27:03,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:03,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903812451] [2022-01-10 00:27:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:03,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:03,818 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 00:27:03,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:03,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903812451] [2022-01-10 00:27:03,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903812451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:03,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:03,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:27:03,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694366101] [2022-01-10 00:27:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:03,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:03,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:03,851 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 00:27:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:06,203 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2022-01-10 00:27:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:06,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-01-10 00:27:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:06,227 INFO L225 Difference]: With dead ends: 1680 [2022-01-10 00:27:06,228 INFO L226 Difference]: Without dead ends: 1011 [2022-01-10 00:27:06,234 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 00:27:06,247 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 570 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:06,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:27:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-01-10 00:27:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2022-01-10 00:27:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 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 00:27:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2022-01-10 00:27:06,310 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 11 [2022-01-10 00:27:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:06,310 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2022-01-10 00:27:06,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 00:27:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2022-01-10 00:27:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 00:27:06,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:06,313 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:27:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:27:06,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 411453157, now seen corresponding path program 1 times [2022-01-10 00:27:06,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:06,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085361612] [2022-01-10 00:27:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:06,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:06,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085361612] [2022-01-10 00:27:06,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085361612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:06,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:06,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:27:06,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775268188] [2022-01-10 00:27:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:06,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:06,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:06,398 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 00:27:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:08,698 INFO L93 Difference]: Finished difference Result 2873 states and 5026 transitions. [2022-01-10 00:27:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2022-01-10 00:27:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:08,705 INFO L225 Difference]: With dead ends: 2873 [2022-01-10 00:27:08,705 INFO L226 Difference]: Without dead ends: 1879 [2022-01-10 00:27:08,707 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 00:27:08,709 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:08,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 521 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:27:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-01-10 00:27:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1870. [2022-01-10 00:27:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4724451578384163) internal successors, (2752), 1869 states have internal predecessors, (2752), 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 00:27:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2752 transitions. [2022-01-10 00:27:08,756 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2752 transitions. Word has length 76 [2022-01-10 00:27:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:08,758 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 2752 transitions. [2022-01-10 00:27:08,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 00:27:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2752 transitions. [2022-01-10 00:27:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 00:27:08,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:08,761 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:27:08,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:27:08,762 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1729618924, now seen corresponding path program 1 times [2022-01-10 00:27:08,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680038188] [2022-01-10 00:27:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:08,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:08,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:08,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680038188] [2022-01-10 00:27:08,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680038188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:08,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:08,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:08,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420369156] [2022-01-10 00:27:08,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:08,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:08,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:08,894 INFO L87 Difference]: Start difference. First operand 1870 states and 2752 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 00:27:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:10,638 INFO L93 Difference]: Finished difference Result 5454 states and 8042 transitions. [2022-01-10 00:27:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-01-10 00:27:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:10,649 INFO L225 Difference]: With dead ends: 5454 [2022-01-10 00:27:10,649 INFO L226 Difference]: Without dead ends: 3586 [2022-01-10 00:27:10,652 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 00:27:10,653 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 483 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:10,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 914 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:27:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2022-01-10 00:27:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3583. [2022-01-10 00:27:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3358458961474038) internal successors, (4785), 3582 states have internal predecessors, (4785), 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 00:27:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4785 transitions. [2022-01-10 00:27:10,741 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4785 transitions. Word has length 81 [2022-01-10 00:27:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:10,742 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 4785 transitions. [2022-01-10 00:27:10,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 00:27:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4785 transitions. [2022-01-10 00:27:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 00:27:10,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:10,743 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:27:10,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:27:10,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1109755807, now seen corresponding path program 1 times [2022-01-10 00:27:10,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:10,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736333909] [2022-01-10 00:27:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:10,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:10,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736333909] [2022-01-10 00:27:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736333909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:10,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:10,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:27:10,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819978757] [2022-01-10 00:27:10,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:10,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:10,819 INFO L87 Difference]: Start difference. First operand 3583 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 00:27:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:12,250 INFO L93 Difference]: Finished difference Result 10571 states and 14111 transitions. [2022-01-10 00:27:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:12,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 122 [2022-01-10 00:27:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:12,263 INFO L225 Difference]: With dead ends: 10571 [2022-01-10 00:27:12,263 INFO L226 Difference]: Without dead ends: 5286 [2022-01-10 00:27:12,268 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 00:27:12,277 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:12,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-01-10 00:27:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4431. [2022-01-10 00:27:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 4430 states have (on average 1.209255079006772) internal successors, (5357), 4430 states have internal predecessors, (5357), 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 00:27:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 5357 transitions. [2022-01-10 00:27:12,344 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 5357 transitions. Word has length 122 [2022-01-10 00:27:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:12,345 INFO L470 AbstractCegarLoop]: Abstraction has 4431 states and 5357 transitions. [2022-01-10 00:27:12,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 00:27:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 5357 transitions. [2022-01-10 00:27:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 00:27:12,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:12,354 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:12,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:27:12,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2101613826, now seen corresponding path program 1 times [2022-01-10 00:27:12,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084441315] [2022-01-10 00:27:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:12,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:12,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:12,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084441315] [2022-01-10 00:27:12,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084441315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:12,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:12,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:12,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084492585] [2022-01-10 00:27:12,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:12,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:12,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:12,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:12,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:12,472 INFO L87 Difference]: Start difference. First operand 4431 states and 5357 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 00:27:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:13,981 INFO L93 Difference]: Finished difference Result 11410 states and 14012 transitions. [2022-01-10 00:27:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-01-10 00:27:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:13,997 INFO L225 Difference]: With dead ends: 11410 [2022-01-10 00:27:13,998 INFO L226 Difference]: Without dead ends: 6981 [2022-01-10 00:27:14,002 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 00:27:14,002 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:14,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2022-01-10 00:27:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6981. [2022-01-10 00:27:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.1835243553008596) internal successors, (8261), 6980 states have internal predecessors, (8261), 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 00:27:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 8261 transitions. [2022-01-10 00:27:14,086 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 8261 transitions. Word has length 163 [2022-01-10 00:27:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:14,086 INFO L470 AbstractCegarLoop]: Abstraction has 6981 states and 8261 transitions. [2022-01-10 00:27:14,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 00:27:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 8261 transitions. [2022-01-10 00:27:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-10 00:27:14,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:14,089 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:14,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:27:14,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 987565281, now seen corresponding path program 1 times [2022-01-10 00:27:14,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:14,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641696594] [2022-01-10 00:27:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:14,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:27:14,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:14,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641696594] [2022-01-10 00:27:14,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641696594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:14,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:14,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:14,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777466960] [2022-01-10 00:27:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:14,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:14,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:14,238 INFO L87 Difference]: Start difference. First operand 6981 states and 8261 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 00:27:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:15,764 INFO L93 Difference]: Finished difference Result 17786 states and 21271 transitions. [2022-01-10 00:27:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:15,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 243 [2022-01-10 00:27:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:15,789 INFO L225 Difference]: With dead ends: 17786 [2022-01-10 00:27:15,789 INFO L226 Difference]: Without dead ends: 9957 [2022-01-10 00:27:15,797 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 00:27:15,798 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:15,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 858 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2022-01-10 00:27:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9957. [2022-01-10 00:27:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9957 states, 9956 states have (on average 1.1449377259943752) internal successors, (11399), 9956 states have internal predecessors, (11399), 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 00:27:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9957 states to 9957 states and 11399 transitions. [2022-01-10 00:27:15,979 INFO L78 Accepts]: Start accepts. Automaton has 9957 states and 11399 transitions. Word has length 243 [2022-01-10 00:27:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:15,980 INFO L470 AbstractCegarLoop]: Abstraction has 9957 states and 11399 transitions. [2022-01-10 00:27:15,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 00:27:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9957 states and 11399 transitions. [2022-01-10 00:27:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-01-10 00:27:15,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:15,983 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 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 00:27:15,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:27:15,984 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:15,985 INFO L85 PathProgramCache]: Analyzing trace with hash 585499196, now seen corresponding path program 1 times [2022-01-10 00:27:15,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:15,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438241308] [2022-01-10 00:27:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:15,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-01-10 00:27:16,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:16,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438241308] [2022-01-10 00:27:16,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438241308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:16,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:16,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:16,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430490302] [2022-01-10 00:27:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:16,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:16,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:16,082 INFO L87 Difference]: Start difference. First operand 9957 states and 11399 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 00:27:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:17,640 INFO L93 Difference]: Finished difference Result 23316 states and 26854 transitions. [2022-01-10 00:27:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:17,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 283 [2022-01-10 00:27:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:17,662 INFO L225 Difference]: With dead ends: 23316 [2022-01-10 00:27:17,663 INFO L226 Difference]: Without dead ends: 12487 [2022-01-10 00:27:17,672 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 00:27:17,673 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 517 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:17,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 680 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:27:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12487 states. [2022-01-10 00:27:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12487 to 12485. [2022-01-10 00:27:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12485 states, 12484 states have (on average 1.1342518423582184) internal successors, (14160), 12484 states have internal predecessors, (14160), 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 00:27:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12485 states to 12485 states and 14160 transitions. [2022-01-10 00:27:17,849 INFO L78 Accepts]: Start accepts. Automaton has 12485 states and 14160 transitions. Word has length 283 [2022-01-10 00:27:17,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:17,849 INFO L470 AbstractCegarLoop]: Abstraction has 12485 states and 14160 transitions. [2022-01-10 00:27:17,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 00:27:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 12485 states and 14160 transitions. [2022-01-10 00:27:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-10 00:27:17,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:17,855 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:27:17,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:27:17,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash 203671020, now seen corresponding path program 1 times [2022-01-10 00:27:17,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:17,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41130252] [2022-01-10 00:27:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:17,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:18,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:18,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41130252] [2022-01-10 00:27:18,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41130252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:18,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:18,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:18,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634282999] [2022-01-10 00:27:18,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:18,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:18,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:27:18,022 INFO L87 Difference]: Start difference. First operand 12485 states and 14160 transitions. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 3 states have internal predecessors, (350), 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 00:27:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:20,135 INFO L93 Difference]: Finished difference Result 28835 states and 32796 transitions. [2022-01-10 00:27:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 3 states have internal predecessors, (350), 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 350 [2022-01-10 00:27:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:20,157 INFO L225 Difference]: With dead ends: 28835 [2022-01-10 00:27:20,157 INFO L226 Difference]: Without dead ends: 15927 [2022-01-10 00:27:20,170 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 00:27:20,171 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 646 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:20,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 202 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:27:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15927 states. [2022-01-10 00:27:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15927 to 15922. [2022-01-10 00:27:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15922 states, 15921 states have (on average 1.1432070849820992) internal successors, (18201), 15921 states have internal predecessors, (18201), 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 00:27:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 18201 transitions. [2022-01-10 00:27:20,406 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 18201 transitions. Word has length 350 [2022-01-10 00:27:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:20,407 INFO L470 AbstractCegarLoop]: Abstraction has 15922 states and 18201 transitions. [2022-01-10 00:27:20,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 3 states have internal predecessors, (350), 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 00:27:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 18201 transitions. [2022-01-10 00:27:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-01-10 00:27:20,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:20,415 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:20,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:27:20,415 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1288175596, now seen corresponding path program 1 times [2022-01-10 00:27:20,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:20,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607083563] [2022-01-10 00:27:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:20,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 17 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:20,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607083563] [2022-01-10 00:27:20,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607083563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:20,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347292935] [2022-01-10 00:27:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:20,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:20,576 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 00:27:20,579 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 00:27:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:20,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:27:20,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:27:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 17 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:21,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:27:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:22,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347292935] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:22,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:27:22,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:27:22,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190358505] [2022-01-10 00:27:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:22,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:22,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:27:22,412 INFO L87 Difference]: Start difference. First operand 15922 states and 18201 transitions. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 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 00:27:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:24,921 INFO L93 Difference]: Finished difference Result 37372 states and 42569 transitions. [2022-01-10 00:27:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:24,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 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 378 [2022-01-10 00:27:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:24,952 INFO L225 Difference]: With dead ends: 37372 [2022-01-10 00:27:24,952 INFO L226 Difference]: Without dead ends: 20175 [2022-01-10 00:27:24,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 751 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:27:24,971 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 755 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:24,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 144 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:27:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20175 states. [2022-01-10 00:27:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20175 to 16345. [2022-01-10 00:27:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16345 states, 16344 states have (on average 1.139623103279491) internal successors, (18626), 16344 states have internal predecessors, (18626), 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 00:27:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16345 states to 16345 states and 18626 transitions. [2022-01-10 00:27:25,163 INFO L78 Accepts]: Start accepts. Automaton has 16345 states and 18626 transitions. Word has length 378 [2022-01-10 00:27:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:25,164 INFO L470 AbstractCegarLoop]: Abstraction has 16345 states and 18626 transitions. [2022-01-10 00:27:25,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 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 00:27:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 16345 states and 18626 transitions. [2022-01-10 00:27:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-01-10 00:27:25,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:25,175 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:25,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:27:25,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:25,412 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1274385449, now seen corresponding path program 1 times [2022-01-10 00:27:25,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:25,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020752620] [2022-01-10 00:27:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:25,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 26 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:25,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020752620] [2022-01-10 00:27:25,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020752620] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026756186] [2022-01-10 00:27:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:25,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:25,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:27:25,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:27:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:25,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:27:25,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:27:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 173 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 00:27:26,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:27:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 00:27:27,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026756186] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:27,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:27:27,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2022-01-10 00:27:27,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925108093] [2022-01-10 00:27:27,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:27,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:27,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:27,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:27:27,100 INFO L87 Difference]: Start difference. First operand 16345 states and 18626 transitions. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 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 00:27:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:29,273 INFO L93 Difference]: Finished difference Result 41666 states and 47602 transitions. [2022-01-10 00:27:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:29,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 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 452 [2022-01-10 00:27:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:29,297 INFO L225 Difference]: With dead ends: 41666 [2022-01-10 00:27:29,297 INFO L226 Difference]: Without dead ends: 25748 [2022-01-10 00:27:29,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 899 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:27:29,308 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 840 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:29,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 183 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:27:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25748 states. [2022-01-10 00:27:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25748 to 24041. [2022-01-10 00:27:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24041 states, 24040 states have (on average 1.143053244592346) internal successors, (27479), 24040 states have internal predecessors, (27479), 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 00:27:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24041 states to 24041 states and 27479 transitions. [2022-01-10 00:27:29,544 INFO L78 Accepts]: Start accepts. Automaton has 24041 states and 27479 transitions. Word has length 452 [2022-01-10 00:27:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:29,544 INFO L470 AbstractCegarLoop]: Abstraction has 24041 states and 27479 transitions. [2022-01-10 00:27:29,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 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 00:27:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 24041 states and 27479 transitions. [2022-01-10 00:27:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-01-10 00:27:29,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:29,556 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-01-10 00:27:29,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:27:29,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 00:27:29,773 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2081259352, now seen corresponding path program 1 times [2022-01-10 00:27:29,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564561484] [2022-01-10 00:27:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:29,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-01-10 00:27:29,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:29,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564561484] [2022-01-10 00:27:29,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564561484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:29,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:29,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:29,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285227426] [2022-01-10 00:27:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:29,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:29,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:29,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:29,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:29,936 INFO L87 Difference]: Start difference. First operand 24041 states and 27479 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 00:27:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:31,491 INFO L93 Difference]: Finished difference Result 56587 states and 64742 transitions. [2022-01-10 00:27:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:31,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 508 [2022-01-10 00:27:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:31,521 INFO L225 Difference]: With dead ends: 56587 [2022-01-10 00:27:31,522 INFO L226 Difference]: Without dead ends: 30413 [2022-01-10 00:27:31,537 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 00:27:31,538 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 492 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:31,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 717 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:27:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30413 states. [2022-01-10 00:27:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30413 to 30407. [2022-01-10 00:27:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 30406 states have (on average 1.1227718213510491) internal successors, (34139), 30406 states have internal predecessors, (34139), 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 00:27:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 34139 transitions. [2022-01-10 00:27:31,909 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 34139 transitions. Word has length 508 [2022-01-10 00:27:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:31,910 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 34139 transitions. [2022-01-10 00:27:31,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 00:27:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 34139 transitions. [2022-01-10 00:27:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-01-10 00:27:31,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:31,926 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-01-10 00:27:31,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:27:31,926 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:31,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1568111349, now seen corresponding path program 1 times [2022-01-10 00:27:31,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:31,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476541200] [2022-01-10 00:27:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:31,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:27:32,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476541200] [2022-01-10 00:27:32,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476541200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:32,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:32,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:32,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043924446] [2022-01-10 00:27:32,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:32,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:32,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:32,100 INFO L87 Difference]: Start difference. First operand 30407 states and 34139 transitions. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 00:27:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:33,884 INFO L93 Difference]: Finished difference Result 70621 states and 79586 transitions. [2022-01-10 00:27:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:33,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 558 [2022-01-10 00:27:33,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:34,017 INFO L225 Difference]: With dead ends: 70621 [2022-01-10 00:27:34,017 INFO L226 Difference]: Without dead ends: 39364 [2022-01-10 00:27:34,027 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 00:27:34,027 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 428 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:34,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 640 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:27:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39364 states. [2022-01-10 00:27:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39364 to 37232. [2022-01-10 00:27:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37232 states, 37231 states have (on average 1.1269909484032123) internal successors, (41959), 37231 states have internal predecessors, (41959), 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 00:27:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37232 states to 37232 states and 41959 transitions. [2022-01-10 00:27:34,458 INFO L78 Accepts]: Start accepts. Automaton has 37232 states and 41959 transitions. Word has length 558 [2022-01-10 00:27:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:34,459 INFO L470 AbstractCegarLoop]: Abstraction has 37232 states and 41959 transitions. [2022-01-10 00:27:34,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 00:27:34,459 INFO L276 IsEmpty]: Start isEmpty. Operand 37232 states and 41959 transitions. [2022-01-10 00:27:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-01-10 00:27:34,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:34,478 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:34,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:27:34,479 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2028998492, now seen corresponding path program 1 times [2022-01-10 00:27:34,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960424480] [2022-01-10 00:27:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:34,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 00:27:34,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:34,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960424480] [2022-01-10 00:27:34,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960424480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:34,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:34,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:27:34,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209608308] [2022-01-10 00:27:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:34,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:34,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:27:34,664 INFO L87 Difference]: Start difference. First operand 37232 states and 41959 transitions. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 00:27:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:37,638 INFO L93 Difference]: Finished difference Result 100916 states and 113790 transitions. [2022-01-10 00:27:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 562 [2022-01-10 00:27:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:37,708 INFO L225 Difference]: With dead ends: 100916 [2022-01-10 00:27:37,708 INFO L226 Difference]: Without dead ends: 64111 [2022-01-10 00:27:37,720 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 00:27:37,721 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 819 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:37,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 186 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:27:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64111 states. [2022-01-10 00:27:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64111 to 61552. [2022-01-10 00:27:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61552 states, 61551 states have (on average 1.1249207973875324) internal successors, (69240), 61551 states have internal predecessors, (69240), 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 00:27:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61552 states to 61552 states and 69240 transitions. [2022-01-10 00:27:38,497 INFO L78 Accepts]: Start accepts. Automaton has 61552 states and 69240 transitions. Word has length 562 [2022-01-10 00:27:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:38,498 INFO L470 AbstractCegarLoop]: Abstraction has 61552 states and 69240 transitions. [2022-01-10 00:27:38,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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 00:27:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 61552 states and 69240 transitions. [2022-01-10 00:27:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2022-01-10 00:27:38,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:38,516 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:38,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:27:38,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:38,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 957459080, now seen corresponding path program 1 times [2022-01-10 00:27:38,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:38,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938269422] [2022-01-10 00:27:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:38,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 371 proven. 82 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 00:27:38,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938269422] [2022-01-10 00:27:38,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938269422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:38,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387936213] [2022-01-10 00:27:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:38,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:38,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:38,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:27:38,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:27:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:39,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 00:27:39,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:27:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 371 proven. 82 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 00:27:40,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:27:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 452 proven. 1 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 00:27:42,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387936213] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:27:42,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:27:42,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-01-10 00:27:42,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352923997] [2022-01-10 00:27:42,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:27:42,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 00:27:42,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:42,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 00:27:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 00:27:42,381 INFO L87 Difference]: Start difference. First operand 61552 states and 69240 transitions. Second operand has 10 states, 10 states have (on average 82.8) internal successors, (828), 9 states have internal predecessors, (828), 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 00:27:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:47,751 INFO L93 Difference]: Finished difference Result 141421 states and 158946 transitions. [2022-01-10 00:27:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 00:27:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 82.8) internal successors, (828), 9 states have internal predecessors, (828), 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 577 [2022-01-10 00:27:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:47,996 INFO L225 Difference]: With dead ends: 141421 [2022-01-10 00:27:47,996 INFO L226 Difference]: Without dead ends: 80296 [2022-01-10 00:27:48,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1148 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-01-10 00:27:48,039 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 3250 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 6446 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 7366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 6446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:48,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3250 Valid, 459 Invalid, 7366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 6446 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 00:27:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80296 states. [2022-01-10 00:27:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80296 to 67916. [2022-01-10 00:27:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67916 states, 67915 states have (on average 1.117941544577781) internal successors, (75925), 67915 states have internal predecessors, (75925), 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 00:27:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67916 states to 67916 states and 75925 transitions. [2022-01-10 00:27:49,166 INFO L78 Accepts]: Start accepts. Automaton has 67916 states and 75925 transitions. Word has length 577 [2022-01-10 00:27:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:49,167 INFO L470 AbstractCegarLoop]: Abstraction has 67916 states and 75925 transitions. [2022-01-10 00:27:49,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.8) internal successors, (828), 9 states have internal predecessors, (828), 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 00:27:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 67916 states and 75925 transitions. [2022-01-10 00:27:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-01-10 00:27:49,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:49,361 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-01-10 00:27:49,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 00:27:49,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:49,562 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:49,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1438705959, now seen corresponding path program 1 times [2022-01-10 00:27:49,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:49,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574003807] [2022-01-10 00:27:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:49,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-01-10 00:27:49,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:49,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574003807] [2022-01-10 00:27:49,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574003807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:49,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:49,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:49,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778835747] [2022-01-10 00:27:49,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:49,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:49,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:49,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:49,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:49,847 INFO L87 Difference]: Start difference. First operand 67916 states and 75925 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 00:27:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:51,729 INFO L93 Difference]: Finished difference Result 156688 states and 175648 transitions. [2022-01-10 00:27:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:51,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 637 [2022-01-10 00:27:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:51,836 INFO L225 Difference]: With dead ends: 156688 [2022-01-10 00:27:51,836 INFO L226 Difference]: Without dead ends: 89197 [2022-01-10 00:27:51,862 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 00:27:51,863 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 426 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:51,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 338 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:27:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89197 states. [2022-01-10 00:27:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89197 to 86200. [2022-01-10 00:27:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86200 states, 86199 states have (on average 1.1056276754950753) internal successors, (95304), 86199 states have internal predecessors, (95304), 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 00:27:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86200 states to 86200 states and 95304 transitions. [2022-01-10 00:27:53,056 INFO L78 Accepts]: Start accepts. Automaton has 86200 states and 95304 transitions. Word has length 637 [2022-01-10 00:27:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:53,056 INFO L470 AbstractCegarLoop]: Abstraction has 86200 states and 95304 transitions. [2022-01-10 00:27:53,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 00:27:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 86200 states and 95304 transitions. [2022-01-10 00:27:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2022-01-10 00:27:53,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:53,071 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:53,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:27:53,071 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 507069200, now seen corresponding path program 1 times [2022-01-10 00:27:53,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:53,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115841521] [2022-01-10 00:27:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:53,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-01-10 00:27:53,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:53,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115841521] [2022-01-10 00:27:53,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115841521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:53,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:53,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:53,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399743884] [2022-01-10 00:27:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:53,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:53,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:53,237 INFO L87 Difference]: Start difference. First operand 86200 states and 95304 transitions. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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 00:27:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:55,376 INFO L93 Difference]: Finished difference Result 184325 states and 203672 transitions. [2022-01-10 00:27:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:55,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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 659 [2022-01-10 00:27:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:55,504 INFO L225 Difference]: With dead ends: 184325 [2022-01-10 00:27:55,504 INFO L226 Difference]: Without dead ends: 98552 [2022-01-10 00:27:55,554 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 00:27:55,554 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 329 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:55,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 752 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98552 states. [2022-01-10 00:27:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98552 to 95560. [2022-01-10 00:27:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95560 states, 95559 states have (on average 1.0980336755303006) internal successors, (104927), 95559 states have internal predecessors, (104927), 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 00:27:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95560 states to 95560 states and 104927 transitions. [2022-01-10 00:27:56,830 INFO L78 Accepts]: Start accepts. Automaton has 95560 states and 104927 transitions. Word has length 659 [2022-01-10 00:27:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:56,831 INFO L470 AbstractCegarLoop]: Abstraction has 95560 states and 104927 transitions. [2022-01-10 00:27:56,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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 00:27:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 95560 states and 104927 transitions. [2022-01-10 00:27:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2022-01-10 00:27:57,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:57,010 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:57,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:27:57,010 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash -987745193, now seen corresponding path program 1 times [2022-01-10 00:27:57,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:57,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585118458] [2022-01-10 00:27:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:57,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 758 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-01-10 00:27:57,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:57,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585118458] [2022-01-10 00:27:57,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585118458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:57,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:57,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093643861] [2022-01-10 00:27:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:57,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:57,486 INFO L87 Difference]: Start difference. First operand 95560 states and 104927 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 00:27:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:59,394 INFO L93 Difference]: Finished difference Result 203896 states and 223880 transitions. [2022-01-10 00:27:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 709 [2022-01-10 00:27:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:59,539 INFO L225 Difference]: With dead ends: 203896 [2022-01-10 00:27:59,539 INFO L226 Difference]: Without dead ends: 108763 [2022-01-10 00:27:59,583 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 00:27:59,585 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 327 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:59,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 275 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:27:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108763 states. [2022-01-10 00:28:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108763 to 102784. [2022-01-10 00:28:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102784 states, 102783 states have (on average 1.0862691301090648) internal successors, (111650), 102783 states have internal predecessors, (111650), 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 00:28:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102784 states to 102784 states and 111650 transitions. [2022-01-10 00:28:00,978 INFO L78 Accepts]: Start accepts. Automaton has 102784 states and 111650 transitions. Word has length 709 [2022-01-10 00:28:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:00,978 INFO L470 AbstractCegarLoop]: Abstraction has 102784 states and 111650 transitions. [2022-01-10 00:28:00,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 00:28:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 102784 states and 111650 transitions. [2022-01-10 00:28:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2022-01-10 00:28:00,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:00,997 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2022-01-10 00:28:00,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:28:00,997 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -448994127, now seen corresponding path program 1 times [2022-01-10 00:28:00,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:00,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761630564] [2022-01-10 00:28:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:00,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms