/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/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:12:55,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:12:55,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:12:55,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:12:56,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:12:56,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:12:56,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:12:56,011 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 01:12:56,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:12:56,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:12:56,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:12:56,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:12:56,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:12:56,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:12:56,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:12:56,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:12:56,038 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:12:56,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:12:56,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:12:56,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:12:56,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:12:56,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:12:56,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:12:56,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:12:56,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:12:56,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:12:56,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:12:56,269 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:12:56,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2022-01-10 01:12:56,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c472f19/6e41210f115f43389b1dfb65862cb8de/FLAG63708d380 [2022-01-10 01:12:56,723 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:12:56,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2022-01-10 01:12:56,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c472f19/6e41210f115f43389b1dfb65862cb8de/FLAG63708d380 [2022-01-10 01:12:56,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c472f19/6e41210f115f43389b1dfb65862cb8de [2022-01-10 01:12:56,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:12:56,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:12:56,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:12:56,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:12:56,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:12:56,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:12:56" (1/1) ... [2022-01-10 01:12:56,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ddfdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:56, skipping insertion in model container [2022-01-10 01:12:56,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:12:56" (1/1) ... [2022-01-10 01:12:56,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:12:56,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:12:57,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2022-01-10 01:12:57,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:12:57,035 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:12:57,062 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2022-01-10 01:12:57,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:12:57,073 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:12:57,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57 WrapperNode [2022-01-10 01:12:57,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:12:57,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:12:57,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:12:57,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:12:57,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,126 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 313 [2022-01-10 01:12:57,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:12:57,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:12:57,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:12:57,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:12:57,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:12:57,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:12:57,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:12:57,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:12:57,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (1/1) ... [2022-01-10 01:12:57,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:12:57,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:12:57,186 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 01:12:57,188 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 01:12:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:12:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:12:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:12:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:12:57,311 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:12:57,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:12:57,622 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:12:57,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:12:57,628 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:12:57,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:12:57 BoogieIcfgContainer [2022-01-10 01:12:57,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:12:57,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:12:57,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:12:57,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:12:57,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:12:56" (1/3) ... [2022-01-10 01:12:57,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572bfa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:12:57, skipping insertion in model container [2022-01-10 01:12:57,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:12:57" (2/3) ... [2022-01-10 01:12:57,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572bfa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:12:57, skipping insertion in model container [2022-01-10 01:12:57,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:12:57" (3/3) ... [2022-01-10 01:12:57,634 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2022-01-10 01:12:57,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:12:57,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:12:57,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:12:57,671 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 01:12:57,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:12:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.694736842105263) internal successors, (161), 96 states have internal predecessors, (161), 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 01:12:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 01:12:57,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:57,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:57,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1799424214, now seen corresponding path program 1 times [2022-01-10 01:12:57,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263808950] [2022-01-10 01:12:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:57,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:57,800 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 01:12:57,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:57,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263808950] [2022-01-10 01:12:57,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263808950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:57,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:57,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:12:57,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665476953] [2022-01-10 01:12:57,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:57,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:12:57,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:12:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:12:57,823 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.694736842105263) internal successors, (161), 96 states have internal predecessors, (161), 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 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 01:12:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:57,837 INFO L93 Difference]: Finished difference Result 165 states and 268 transitions. [2022-01-10 01:12:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:12:57,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2022-01-10 01:12:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:57,844 INFO L225 Difference]: With dead ends: 165 [2022-01-10 01:12:57,844 INFO L226 Difference]: Without dead ends: 93 [2022-01-10 01:12:57,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:12:57,848 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:57,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-10 01:12:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-01-10 01:12:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.673913043478261) internal successors, (154), 92 states have internal predecessors, (154), 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 01:12:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 154 transitions. [2022-01-10 01:12:57,871 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 154 transitions. Word has length 29 [2022-01-10 01:12:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:57,872 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 154 transitions. [2022-01-10 01:12:57,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 01:12:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 154 transitions. [2022-01-10 01:12:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 01:12:57,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:57,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:57,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:12:57,873 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1665410708, now seen corresponding path program 1 times [2022-01-10 01:12:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566616733] [2022-01-10 01:12:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:57,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:57,943 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 01:12:57,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566616733] [2022-01-10 01:12:57,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566616733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:57,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:57,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:12:57,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900118839] [2022-01-10 01:12:57,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:57,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:12:57,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:57,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:12:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:12:57,947 INFO L87 Difference]: Start difference. First operand 93 states and 154 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 01:12:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:58,034 INFO L93 Difference]: Finished difference Result 223 states and 358 transitions. [2022-01-10 01:12:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:12:58,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2022-01-10 01:12:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:58,040 INFO L225 Difference]: With dead ends: 223 [2022-01-10 01:12:58,041 INFO L226 Difference]: Without dead ends: 156 [2022-01-10 01:12:58,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:12:58,042 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 102 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:58,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 571 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:58,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-10 01:12:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 93. [2022-01-10 01:12:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 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 01:12:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2022-01-10 01:12:58,051 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 29 [2022-01-10 01:12:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:58,051 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2022-01-10 01:12:58,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 01:12:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2022-01-10 01:12:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 01:12:58,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:58,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:58,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:12:58,053 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:58,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1640520051, now seen corresponding path program 1 times [2022-01-10 01:12:58,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:58,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29331894] [2022-01-10 01:12:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:58,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:58,175 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 01:12:58,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:58,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29331894] [2022-01-10 01:12:58,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29331894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:58,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:58,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:12:58,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728181558] [2022-01-10 01:12:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:58,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:12:58,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:12:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:12:58,179 INFO L87 Difference]: Start difference. First operand 93 states and 130 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:12:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:58,199 INFO L93 Difference]: Finished difference Result 207 states and 310 transitions. [2022-01-10 01:12:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:12:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2022-01-10 01:12:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:58,203 INFO L225 Difference]: With dead ends: 207 [2022-01-10 01:12:58,203 INFO L226 Difference]: Without dead ends: 144 [2022-01-10 01:12:58,204 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 01:12:58,206 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 84 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:58,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-10 01:12:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2022-01-10 01:12:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 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 01:12:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 208 transitions. [2022-01-10 01:12:58,214 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 208 transitions. Word has length 52 [2022-01-10 01:12:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:58,215 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 208 transitions. [2022-01-10 01:12:58,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:12:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 208 transitions. [2022-01-10 01:12:58,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 01:12:58,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:58,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:58,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:12:58,222 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:58,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:58,223 INFO L85 PathProgramCache]: Analyzing trace with hash -609394571, now seen corresponding path program 1 times [2022-01-10 01:12:58,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:58,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391270815] [2022-01-10 01:12:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:58,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:58,306 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 01:12:58,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:58,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391270815] [2022-01-10 01:12:58,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391270815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:58,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:58,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:12:58,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521047058] [2022-01-10 01:12:58,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:58,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:12:58,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:12:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:12:58,308 INFO L87 Difference]: Start difference. First operand 142 states and 208 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:12:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:58,328 INFO L93 Difference]: Finished difference Result 342 states and 524 transitions. [2022-01-10 01:12:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:12:58,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 01:12:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:58,329 INFO L225 Difference]: With dead ends: 342 [2022-01-10 01:12:58,329 INFO L226 Difference]: Without dead ends: 230 [2022-01-10 01:12:58,332 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 01:12:58,337 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 79 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:58,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-10 01:12:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2022-01-10 01:12:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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 01:12:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 343 transitions. [2022-01-10 01:12:58,358 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 343 transitions. Word has length 53 [2022-01-10 01:12:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:58,359 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 343 transitions. [2022-01-10 01:12:58,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:12:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 343 transitions. [2022-01-10 01:12:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 01:12:58,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:58,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:58,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:12:58,360 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1908001763, now seen corresponding path program 1 times [2022-01-10 01:12:58,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:58,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829495054] [2022-01-10 01:12:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:58,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:58,424 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 01:12:58,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:58,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829495054] [2022-01-10 01:12:58,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829495054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:58,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:58,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:12:58,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026329283] [2022-01-10 01:12:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:58,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:12:58,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:12:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:12:58,426 INFO L87 Difference]: Start difference. First operand 228 states and 343 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 01:12:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:58,445 INFO L93 Difference]: Finished difference Result 576 states and 889 transitions. [2022-01-10 01:12:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:12:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2022-01-10 01:12:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:58,448 INFO L225 Difference]: With dead ends: 576 [2022-01-10 01:12:58,448 INFO L226 Difference]: Without dead ends: 378 [2022-01-10 01:12:58,449 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 01:12:58,451 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 74 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:58,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-10 01:12:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-01-10 01:12:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.5226666666666666) internal successors, (571), 375 states have internal predecessors, (571), 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 01:12:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 571 transitions. [2022-01-10 01:12:58,478 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 571 transitions. Word has length 54 [2022-01-10 01:12:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:58,478 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 571 transitions. [2022-01-10 01:12:58,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 01:12:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 571 transitions. [2022-01-10 01:12:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:12:58,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:58,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:58,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:12:58,483 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash 553512453, now seen corresponding path program 1 times [2022-01-10 01:12:58,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:58,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840444985] [2022-01-10 01:12:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:58,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:58,564 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 01:12:58,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:58,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840444985] [2022-01-10 01:12:58,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840444985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:58,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:58,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:12:58,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039544159] [2022-01-10 01:12:58,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:58,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:12:58,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:58,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:12:58,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:12:58,567 INFO L87 Difference]: Start difference. First operand 376 states and 571 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 01:12:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:58,710 INFO L93 Difference]: Finished difference Result 2106 states and 3276 transitions. [2022-01-10 01:12:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:12:58,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 55 [2022-01-10 01:12:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:58,720 INFO L225 Difference]: With dead ends: 2106 [2022-01-10 01:12:58,720 INFO L226 Difference]: Without dead ends: 1760 [2022-01-10 01:12:58,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:12:58,723 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 725 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:58,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 1064 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2022-01-10 01:12:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 720. [2022-01-10 01:12:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.5229485396383866) internal successors, (1095), 719 states have internal predecessors, (1095), 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 01:12:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1095 transitions. [2022-01-10 01:12:58,757 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1095 transitions. Word has length 55 [2022-01-10 01:12:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:58,758 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 1095 transitions. [2022-01-10 01:12:58,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 01:12:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1095 transitions. [2022-01-10 01:12:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:12:58,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:58,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:58,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:12:58,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:58,760 INFO L85 PathProgramCache]: Analyzing trace with hash -404306473, now seen corresponding path program 1 times [2022-01-10 01:12:58,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:58,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017424719] [2022-01-10 01:12:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:58,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:58,846 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 01:12:58,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:58,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017424719] [2022-01-10 01:12:58,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017424719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:58,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:58,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:12:58,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391934874] [2022-01-10 01:12:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:58,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:12:58,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:12:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:12:58,848 INFO L87 Difference]: Start difference. First operand 720 states and 1095 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:12:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:59,062 INFO L93 Difference]: Finished difference Result 3216 states and 4899 transitions. [2022-01-10 01:12:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:12:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2022-01-10 01:12:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:59,070 INFO L225 Difference]: With dead ends: 3216 [2022-01-10 01:12:59,070 INFO L226 Difference]: Without dead ends: 2526 [2022-01-10 01:12:59,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:12:59,073 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 336 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:59,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 604 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2022-01-10 01:12:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2520. [2022-01-10 01:12:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2519 states have (on average 1.5144898769352917) internal successors, (3815), 2519 states have internal predecessors, (3815), 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 01:12:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3815 transitions. [2022-01-10 01:12:59,268 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3815 transitions. Word has length 56 [2022-01-10 01:12:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:59,268 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 3815 transitions. [2022-01-10 01:12:59,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:12:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3815 transitions. [2022-01-10 01:12:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:12:59,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:59,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:59,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:12:59,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash 399274429, now seen corresponding path program 1 times [2022-01-10 01:12:59,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:59,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198369519] [2022-01-10 01:12:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:59,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:12:59,298 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 01:12:59,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:12:59,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198369519] [2022-01-10 01:12:59,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198369519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:12:59,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:12:59,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:12:59,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348830653] [2022-01-10 01:12:59,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:12:59,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:12:59,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:12:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:12:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:12:59,300 INFO L87 Difference]: Start difference. First operand 2520 states and 3815 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:12:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:12:59,561 INFO L93 Difference]: Finished difference Result 6924 states and 10425 transitions. [2022-01-10 01:12:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:12:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-01-10 01:12:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:12:59,579 INFO L225 Difference]: With dead ends: 6924 [2022-01-10 01:12:59,579 INFO L226 Difference]: Without dead ends: 4434 [2022-01-10 01:12:59,584 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 01:12:59,585 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 88 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:12:59,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:12:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2022-01-10 01:12:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 4432. [2022-01-10 01:12:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4431 states have (on average 1.4838636876551567) internal successors, (6575), 4431 states have internal predecessors, (6575), 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 01:12:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 6575 transitions. [2022-01-10 01:12:59,948 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 6575 transitions. Word has length 56 [2022-01-10 01:12:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:12:59,948 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 6575 transitions. [2022-01-10 01:12:59,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:12:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 6575 transitions. [2022-01-10 01:12:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 01:12:59,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:12:59,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:12:59,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:12:59,949 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:12:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:12:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1681995988, now seen corresponding path program 1 times [2022-01-10 01:12:59,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:12:59,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99180413] [2022-01-10 01:12:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:12:59,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:12:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:00,005 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 01:13:00,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:00,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99180413] [2022-01-10 01:13:00,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99180413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:00,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:00,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:13:00,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421879655] [2022-01-10 01:13:00,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:00,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:13:00,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:13:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:13:00,007 INFO L87 Difference]: Start difference. First operand 4432 states and 6575 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 01:13:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:00,544 INFO L93 Difference]: Finished difference Result 9346 states and 13632 transitions. [2022-01-10 01:13:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:13:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2022-01-10 01:13:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:00,572 INFO L225 Difference]: With dead ends: 9346 [2022-01-10 01:13:00,572 INFO L226 Difference]: Without dead ends: 9344 [2022-01-10 01:13:00,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:13:00,577 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 279 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:00,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 563 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2022-01-10 01:13:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 4816. [2022-01-10 01:13:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4815 states have (on average 1.44527518172378) internal successors, (6959), 4815 states have internal predecessors, (6959), 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 01:13:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 6959 transitions. [2022-01-10 01:13:00,877 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 6959 transitions. Word has length 57 [2022-01-10 01:13:00,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:00,877 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 6959 transitions. [2022-01-10 01:13:00,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 01:13:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 6959 transitions. [2022-01-10 01:13:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 01:13:00,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:00,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:13:00,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:13:00,879 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:00,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash 654846656, now seen corresponding path program 1 times [2022-01-10 01:13:00,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:00,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676543753] [2022-01-10 01:13:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:00,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:00,915 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 01:13:00,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:00,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676543753] [2022-01-10 01:13:00,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676543753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:00,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:00,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:00,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439611162] [2022-01-10 01:13:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:00,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:00,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:00,916 INFO L87 Difference]: Start difference. First operand 4816 states and 6959 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 01:13:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:01,215 INFO L93 Difference]: Finished difference Result 11534 states and 16675 transitions. [2022-01-10 01:13:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2022-01-10 01:13:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:01,233 INFO L225 Difference]: With dead ends: 11534 [2022-01-10 01:13:01,233 INFO L226 Difference]: Without dead ends: 6748 [2022-01-10 01:13:01,239 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 01:13:01,239 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 65 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:01,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2022-01-10 01:13:01,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6746. [2022-01-10 01:13:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6746 states, 6745 states have (on average 1.4364714603409934) internal successors, (9689), 6745 states have internal predecessors, (9689), 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 01:13:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 9689 transitions. [2022-01-10 01:13:01,581 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 9689 transitions. Word has length 58 [2022-01-10 01:13:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:01,582 INFO L470 AbstractCegarLoop]: Abstraction has 6746 states and 9689 transitions. [2022-01-10 01:13:01,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 01:13:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 9689 transitions. [2022-01-10 01:13:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 01:13:01,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:01,586 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:01,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:13:01,586 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2133316492, now seen corresponding path program 1 times [2022-01-10 01:13:01,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:01,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359998627] [2022-01-10 01:13:01,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:01,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:13:01,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:01,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359998627] [2022-01-10 01:13:01,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359998627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:13:01,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813474512] [2022-01-10 01:13:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:01,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:13:01,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:13:01,691 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 01:13:01,694 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 01:13:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:01,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 01:13:01,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:13:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:13:01,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:13:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:13:02,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813474512] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:13:02,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:13:02,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-01-10 01:13:02,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134235099] [2022-01-10 01:13:02,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:13:02,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:13:02,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:13:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:13:02,351 INFO L87 Difference]: Start difference. First operand 6746 states and 9689 transitions. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 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 01:13:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:03,216 INFO L93 Difference]: Finished difference Result 21003 states and 30443 transitions. [2022-01-10 01:13:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:13:03,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 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 01:13:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:03,248 INFO L225 Difference]: With dead ends: 21003 [2022-01-10 01:13:03,249 INFO L226 Difference]: Without dead ends: 16217 [2022-01-10 01:13:03,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:13:03,259 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 768 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:03,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 820 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16217 states. [2022-01-10 01:13:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16217 to 15450. [2022-01-10 01:13:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15450 states, 15449 states have (on average 1.432908278853) internal successors, (22137), 15449 states have internal predecessors, (22137), 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 01:13:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15450 states to 15450 states and 22137 transitions. [2022-01-10 01:13:03,993 INFO L78 Accepts]: Start accepts. Automaton has 15450 states and 22137 transitions. Word has length 81 [2022-01-10 01:13:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:03,993 INFO L470 AbstractCegarLoop]: Abstraction has 15450 states and 22137 transitions. [2022-01-10 01:13:03,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 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 01:13:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 15450 states and 22137 transitions. [2022-01-10 01:13:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:13:03,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:03,997 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:04,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 01:13:04,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 01:13:04,203 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -963170832, now seen corresponding path program 1 times [2022-01-10 01:13:04,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:04,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308183996] [2022-01-10 01:13:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:04,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 01:13:04,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:04,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308183996] [2022-01-10 01:13:04,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308183996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:04,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:04,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:13:04,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672047598] [2022-01-10 01:13:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:04,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:13:04,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:13:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:13:04,266 INFO L87 Difference]: Start difference. First operand 15450 states and 22137 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 01:13:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:05,367 INFO L93 Difference]: Finished difference Result 33108 states and 47710 transitions. [2022-01-10 01:13:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:13:05,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 82 [2022-01-10 01:13:05,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:05,426 INFO L225 Difference]: With dead ends: 33108 [2022-01-10 01:13:05,426 INFO L226 Difference]: Without dead ends: 26854 [2022-01-10 01:13:05,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:13:05,440 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 563 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:05,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 832 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:13:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26854 states. [2022-01-10 01:13:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26854 to 21034. [2022-01-10 01:13:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21034 states, 21033 states have (on average 1.4303713212570721) internal successors, (30085), 21033 states have internal predecessors, (30085), 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 01:13:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21034 states to 21034 states and 30085 transitions. [2022-01-10 01:13:06,662 INFO L78 Accepts]: Start accepts. Automaton has 21034 states and 30085 transitions. Word has length 82 [2022-01-10 01:13:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:06,663 INFO L470 AbstractCegarLoop]: Abstraction has 21034 states and 30085 transitions. [2022-01-10 01:13:06,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 01:13:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 21034 states and 30085 transitions. [2022-01-10 01:13:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:13:06,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:06,667 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:06,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:13:06,667 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1851338368, now seen corresponding path program 1 times [2022-01-10 01:13:06,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:06,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771954201] [2022-01-10 01:13:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:06,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:13:06,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:06,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771954201] [2022-01-10 01:13:06,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771954201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:06,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:06,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:06,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443224553] [2022-01-10 01:13:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:06,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:06,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:06,696 INFO L87 Difference]: Start difference. First operand 21034 states and 30085 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 01:13:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:07,864 INFO L93 Difference]: Finished difference Result 42178 states and 60292 transitions. [2022-01-10 01:13:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:07,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2022-01-10 01:13:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:07,907 INFO L225 Difference]: With dead ends: 42178 [2022-01-10 01:13:07,907 INFO L226 Difference]: Without dead ends: 29912 [2022-01-10 01:13:07,919 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 01:13:07,919 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 65 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:07,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 270 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29912 states. [2022-01-10 01:13:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29912 to 27690. [2022-01-10 01:13:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27690 states, 27689 states have (on average 1.4124742677597601) internal successors, (39110), 27689 states have internal predecessors, (39110), 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 01:13:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27690 states to 27690 states and 39110 transitions. [2022-01-10 01:13:09,559 INFO L78 Accepts]: Start accepts. Automaton has 27690 states and 39110 transitions. Word has length 82 [2022-01-10 01:13:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:09,560 INFO L470 AbstractCegarLoop]: Abstraction has 27690 states and 39110 transitions. [2022-01-10 01:13:09,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 01:13:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 27690 states and 39110 transitions. [2022-01-10 01:13:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:13:09,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:09,564 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:09,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:13:09,565 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2016282864, now seen corresponding path program 1 times [2022-01-10 01:13:09,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828639134] [2022-01-10 01:13:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:09,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:13:09,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:09,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828639134] [2022-01-10 01:13:09,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828639134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:09,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:09,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:09,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348645092] [2022-01-10 01:13:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:09,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:09,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:09,593 INFO L87 Difference]: Start difference. First operand 27690 states and 39110 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 01:13:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:11,044 INFO L93 Difference]: Finished difference Result 44161 states and 62026 transitions. [2022-01-10 01:13:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:11,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2022-01-10 01:13:11,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:11,088 INFO L225 Difference]: With dead ends: 44161 [2022-01-10 01:13:11,088 INFO L226 Difference]: Without dead ends: 28799 [2022-01-10 01:13:11,111 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 01:13:11,112 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:11,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28799 states. [2022-01-10 01:13:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28799 to 27641. [2022-01-10 01:13:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27641 states, 27640 states have (on average 1.3827424023154848) internal successors, (38219), 27640 states have internal predecessors, (38219), 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 01:13:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27641 states to 27641 states and 38219 transitions. [2022-01-10 01:13:12,672 INFO L78 Accepts]: Start accepts. Automaton has 27641 states and 38219 transitions. Word has length 82 [2022-01-10 01:13:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:12,673 INFO L470 AbstractCegarLoop]: Abstraction has 27641 states and 38219 transitions. [2022-01-10 01:13:12,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 01:13:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 27641 states and 38219 transitions. [2022-01-10 01:13:12,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:13:12,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:12,678 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] [2022-01-10 01:13:12,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:13:12,678 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash 990402630, now seen corresponding path program 1 times [2022-01-10 01:13:12,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027499777] [2022-01-10 01:13:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:12,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:13:12,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:12,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027499777] [2022-01-10 01:13:12,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027499777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:12,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:12,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:12,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135431116] [2022-01-10 01:13:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:12,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:12,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:12,711 INFO L87 Difference]: Start difference. First operand 27641 states and 38219 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 01:13:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:15,666 INFO L93 Difference]: Finished difference Result 74352 states and 102593 transitions. [2022-01-10 01:13:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:15,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2022-01-10 01:13:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:15,743 INFO L225 Difference]: With dead ends: 74352 [2022-01-10 01:13:15,743 INFO L226 Difference]: Without dead ends: 50161 [2022-01-10 01:13:15,765 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 01:13:15,766 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 63 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:15,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 254 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50161 states. [2022-01-10 01:13:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50161 to 50043. [2022-01-10 01:13:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50043 states, 50042 states have (on average 1.3631749330562328) internal successors, (68216), 50042 states have internal predecessors, (68216), 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 01:13:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50043 states to 50043 states and 68216 transitions. [2022-01-10 01:13:18,309 INFO L78 Accepts]: Start accepts. Automaton has 50043 states and 68216 transitions. Word has length 82 [2022-01-10 01:13:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:18,310 INFO L470 AbstractCegarLoop]: Abstraction has 50043 states and 68216 transitions. [2022-01-10 01:13:18,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 01:13:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 50043 states and 68216 transitions. [2022-01-10 01:13:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:13:18,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:18,320 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:18,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:13:18,320 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash -634913072, now seen corresponding path program 1 times [2022-01-10 01:13:18,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:18,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445978766] [2022-01-10 01:13:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:18,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:13:18,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:18,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445978766] [2022-01-10 01:13:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445978766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:13:18,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266344247] [2022-01-10 01:13:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:18,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:13:18,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:13:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:13:18,366 INFO L87 Difference]: Start difference. First operand 50043 states and 68216 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 01:13:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:22,226 INFO L93 Difference]: Finished difference Result 88000 states and 121242 transitions. [2022-01-10 01:13:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:13:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 82 [2022-01-10 01:13:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:22,324 INFO L225 Difference]: With dead ends: 88000 [2022-01-10 01:13:22,325 INFO L226 Difference]: Without dead ends: 79830 [2022-01-10 01:13:22,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:13:22,346 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 606 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:22,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 744 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:22,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79830 states. [2022-01-10 01:13:25,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79830 to 57731. [2022-01-10 01:13:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57731 states, 57730 states have (on average 1.3645591546856055) internal successors, (78776), 57730 states have internal predecessors, (78776), 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 01:13:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57731 states to 57731 states and 78776 transitions. [2022-01-10 01:13:25,693 INFO L78 Accepts]: Start accepts. Automaton has 57731 states and 78776 transitions. Word has length 82 [2022-01-10 01:13:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:25,693 INFO L470 AbstractCegarLoop]: Abstraction has 57731 states and 78776 transitions. [2022-01-10 01:13:25,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 01:13:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 57731 states and 78776 transitions. [2022-01-10 01:13:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:13:25,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:25,721 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:25,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:13:25,722 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash 620499738, now seen corresponding path program 1 times [2022-01-10 01:13:25,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:25,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089207609] [2022-01-10 01:13:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:25,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:13:25,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:25,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089207609] [2022-01-10 01:13:25,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089207609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:25,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:25,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:13:25,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302808367] [2022-01-10 01:13:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:25,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:13:25,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:13:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:13:25,794 INFO L87 Difference]: Start difference. First operand 57731 states and 78776 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 01:13:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:30,383 INFO L93 Difference]: Finished difference Result 99531 states and 137170 transitions. [2022-01-10 01:13:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:13:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 82 [2022-01-10 01:13:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:30,499 INFO L225 Difference]: With dead ends: 99531 [2022-01-10 01:13:30,500 INFO L226 Difference]: Without dead ends: 87267 [2022-01-10 01:13:30,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:13:30,527 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 572 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:30,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 811 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:13:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87267 states. [2022-01-10 01:13:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87267 to 69235. [2022-01-10 01:13:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69235 states, 69234 states have (on average 1.3652251783805645) internal successors, (94520), 69234 states have internal predecessors, (94520), 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 01:13:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69235 states to 69235 states and 94520 transitions. [2022-01-10 01:13:34,462 INFO L78 Accepts]: Start accepts. Automaton has 69235 states and 94520 transitions. Word has length 82 [2022-01-10 01:13:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:34,463 INFO L470 AbstractCegarLoop]: Abstraction has 69235 states and 94520 transitions. [2022-01-10 01:13:34,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 01:13:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 69235 states and 94520 transitions. [2022-01-10 01:13:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 01:13:34,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:34,475 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] [2022-01-10 01:13:34,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:13:34,475 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1892417630, now seen corresponding path program 1 times [2022-01-10 01:13:34,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:34,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464110846] [2022-01-10 01:13:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:34,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:13:34,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:34,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464110846] [2022-01-10 01:13:34,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464110846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:34,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:34,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:13:34,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659768708] [2022-01-10 01:13:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:34,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:13:34,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:13:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:13:34,520 INFO L87 Difference]: Start difference. First operand 69235 states and 94520 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 01:13:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:39,469 INFO L93 Difference]: Finished difference Result 113758 states and 156333 transitions. [2022-01-10 01:13:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:13:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 83 [2022-01-10 01:13:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:39,626 INFO L225 Difference]: With dead ends: 113758 [2022-01-10 01:13:39,626 INFO L226 Difference]: Without dead ends: 99645 [2022-01-10 01:13:39,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:13:39,654 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 622 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:39,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 856 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:13:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99645 states. [2022-01-10 01:13:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99645 to 80134. [2022-01-10 01:13:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80134 states, 80133 states have (on average 1.3632211448466924) internal successors, (109239), 80133 states have internal predecessors, (109239), 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 01:13:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80134 states to 80134 states and 109239 transitions. [2022-01-10 01:13:44,251 INFO L78 Accepts]: Start accepts. Automaton has 80134 states and 109239 transitions. Word has length 83 [2022-01-10 01:13:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:13:44,251 INFO L470 AbstractCegarLoop]: Abstraction has 80134 states and 109239 transitions. [2022-01-10 01:13:44,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 01:13:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 80134 states and 109239 transitions. [2022-01-10 01:13:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 01:13:44,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:13:44,259 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:13:44,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:13:44,260 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:13:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:13:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1564512682, now seen corresponding path program 1 times [2022-01-10 01:13:44,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:13:44,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787192092] [2022-01-10 01:13:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:13:44,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:13:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:13:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:13:44,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:13:44,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787192092] [2022-01-10 01:13:44,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787192092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:13:44,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:13:44,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:13:44,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402999438] [2022-01-10 01:13:44,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:13:44,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:13:44,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:13:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:13:44,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:13:44,284 INFO L87 Difference]: Start difference. First operand 80134 states and 109239 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:13:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:13:51,720 INFO L93 Difference]: Finished difference Result 214058 states and 290280 transitions. [2022-01-10 01:13:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:13:51,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2022-01-10 01:13:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:13:51,941 INFO L225 Difference]: With dead ends: 214058 [2022-01-10 01:13:51,942 INFO L226 Difference]: Without dead ends: 136470 [2022-01-10 01:13:51,998 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 01:13:51,999 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 63 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:13:51,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 296 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:13:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136470 states. [2022-01-10 01:14:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136470 to 129803. [2022-01-10 01:14:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129803 states, 129802 states have (on average 1.3398714965871097) internal successors, (173918), 129802 states have internal predecessors, (173918), 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 01:14:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129803 states to 129803 states and 173918 transitions. [2022-01-10 01:14:00,490 INFO L78 Accepts]: Start accepts. Automaton has 129803 states and 173918 transitions. Word has length 85 [2022-01-10 01:14:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:14:00,491 INFO L470 AbstractCegarLoop]: Abstraction has 129803 states and 173918 transitions. [2022-01-10 01:14:00,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:14:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 129803 states and 173918 transitions. [2022-01-10 01:14:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 01:14:00,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:14:00,504 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:14:00,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:14:00,504 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:14:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:14:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1950885767, now seen corresponding path program 1 times [2022-01-10 01:14:00,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:14:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474355832] [2022-01-10 01:14:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:14:00,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:14:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:14:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:14:00,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:14:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474355832] [2022-01-10 01:14:00,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474355832] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:14:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595615199] [2022-01-10 01:14:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:14:00,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:14:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:14:00,780 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 01:14:00,783 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 01:14:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:14:00,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 01:14:00,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:14:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:14:01,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:14:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:14:01,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595615199] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:14:01,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:14:01,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-10 01:14:01,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975969160] [2022-01-10 01:14:01,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:14:01,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 01:14:01,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:14:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 01:14:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:14:01,290 INFO L87 Difference]: Start difference. First operand 129803 states and 173918 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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)