/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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:30:59,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:30:59,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:30:59,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:30:59,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:30:59,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:30:59,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:30:59,961 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 01:30:59,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:30:59,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:30:59,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:30:59,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:30:59,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:30:59,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:30:59,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:30:59,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:30:59,986 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:30:59,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:30:59,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:30:59,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:30:59,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:30:59,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:30:59,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:30:59,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:30:59,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:30:59,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:30:59,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:30:59,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:30:59,990 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:30:59,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:30:59,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:30:59,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:31:00,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:31:00,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:31:00,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:31:00,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:31:00,188 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:31:00,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 01:31:00,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9262438a/1027afaa675f4af7b8f9f06865e7fba9/FLAG7640f4561 [2022-01-10 01:31:00,590 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:31:00,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 01:31:00,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9262438a/1027afaa675f4af7b8f9f06865e7fba9/FLAG7640f4561 [2022-01-10 01:31:00,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9262438a/1027afaa675f4af7b8f9f06865e7fba9 [2022-01-10 01:31:00,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:31:00,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:31:00,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:31:00,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:31:00,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:31:00,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:31:00" (1/1) ... [2022-01-10 01:31:00,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328af162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:00, skipping insertion in model container [2022-01-10 01:31:00,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:31:00" (1/1) ... [2022-01-10 01:31:00,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:31:01,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:31:01,215 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-01-10 01:31:01,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:31:01,238 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:31:01,264 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-01-10 01:31:01,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:31:01,288 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:31:01,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01 WrapperNode [2022-01-10 01:31:01,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:31:01,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:31:01,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:31:01,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:31:01,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,347 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 427 [2022-01-10 01:31:01,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:31:01,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:31:01,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:31:01,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:31:01,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:31:01,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:31:01,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:31:01,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:31:01,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (1/1) ... [2022-01-10 01:31:01,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:31:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:31:01,420 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 01:31:01,451 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 01:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:31:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:31:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:31:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:31:01,550 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:31:01,551 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:31:01,908 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:31:01,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:31:01,913 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:31:01,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:31:01 BoogieIcfgContainer [2022-01-10 01:31:01,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:31:01,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:31:01,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:31:01,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:31:01,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:31:00" (1/3) ... [2022-01-10 01:31:01,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb96868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:31:01, skipping insertion in model container [2022-01-10 01:31:01,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:31:01" (2/3) ... [2022-01-10 01:31:01,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb96868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:31:01, skipping insertion in model container [2022-01-10 01:31:01,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:31:01" (3/3) ... [2022-01-10 01:31:01,935 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 01:31:01,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:31:01,939 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:31:01,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:31:01,991 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 01:31:01,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:31:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 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 01:31:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 01:31:02,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:02,025 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] [2022-01-10 01:31:02,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2022-01-10 01:31:02,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:02,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608515692] [2022-01-10 01:31:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:02,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:02,318 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 01:31:02,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:02,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608515692] [2022-01-10 01:31:02,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608515692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:02,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:02,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:02,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336059711] [2022-01-10 01:31:02,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:02,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:02,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:02,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:02,354 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 01:31:02,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:02,432 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2022-01-10 01:31:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-10 01:31:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:02,442 INFO L225 Difference]: With dead ends: 260 [2022-01-10 01:31:02,442 INFO L226 Difference]: Without dead ends: 171 [2022-01-10 01:31:02,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:02,447 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:31:02,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 401 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-10 01:31:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2022-01-10 01:31:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.505952380952381) internal successors, (253), 168 states have internal predecessors, (253), 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 01:31:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2022-01-10 01:31:02,504 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2022-01-10 01:31:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:02,505 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2022-01-10 01:31:02,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 01:31:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2022-01-10 01:31:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 01:31:02,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:02,508 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] [2022-01-10 01:31:02,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:31:02,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2022-01-10 01:31:02,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:02,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092410265] [2022-01-10 01:31:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:02,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:02,626 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 01:31:02,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:02,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092410265] [2022-01-10 01:31:02,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092410265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:02,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:02,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:02,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806934857] [2022-01-10 01:31:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:02,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:02,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:02,629 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 01:31:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:02,671 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2022-01-10 01:31:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:02,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2022-01-10 01:31:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:02,689 INFO L225 Difference]: With dead ends: 421 [2022-01-10 01:31:02,689 INFO L226 Difference]: Without dead ends: 279 [2022-01-10 01:31:02,690 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 01:31:02,693 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 110 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 348 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 01:31:02,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-01-10 01:31:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2022-01-10 01:31:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.536231884057971) internal successors, (424), 276 states have internal predecessors, (424), 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 01:31:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2022-01-10 01:31:02,708 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2022-01-10 01:31:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:02,709 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2022-01-10 01:31:02,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 01:31:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2022-01-10 01:31:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 01:31:02,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:02,710 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] [2022-01-10 01:31:02,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:31:02,710 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2022-01-10 01:31:02,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:02,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494067336] [2022-01-10 01:31:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:02,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:02,754 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 01:31:02,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494067336] [2022-01-10 01:31:02,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494067336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:02,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:02,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:02,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211397223] [2022-01-10 01:31:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:02,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:02,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:02,757 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 01:31:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:02,786 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2022-01-10 01:31:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:02,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-01-10 01:31:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:02,789 INFO L225 Difference]: With dead ends: 713 [2022-01-10 01:31:02,789 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 01:31:02,791 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 01:31:02,796 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 105 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 333 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 01:31:02,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 01:31:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2022-01-10 01:31:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5478260869565217) internal successors, (712), 460 states have internal predecessors, (712), 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 01:31:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2022-01-10 01:31:02,831 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2022-01-10 01:31:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:02,831 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2022-01-10 01:31:02,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 01:31:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2022-01-10 01:31:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 01:31:02,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:02,832 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] [2022-01-10 01:31:02,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:31:02,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2022-01-10 01:31:02,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:02,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982343005] [2022-01-10 01:31:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:02,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:02,904 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 01:31:02,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:02,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982343005] [2022-01-10 01:31:02,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982343005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:02,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:02,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:02,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651352748] [2022-01-10 01:31:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:02,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:02,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:02,907 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:31:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:02,971 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2022-01-10 01:31:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:02,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 01:31:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:02,974 INFO L225 Difference]: With dead ends: 1201 [2022-01-10 01:31:02,974 INFO L226 Difference]: Without dead ends: 767 [2022-01-10 01:31:02,975 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 01:31:02,975 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 318 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 01:31:02,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-01-10 01:31:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2022-01-10 01:31:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.544502617801047) internal successors, (1180), 764 states have internal predecessors, (1180), 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 01:31:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2022-01-10 01:31:03,014 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2022-01-10 01:31:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:03,015 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2022-01-10 01:31:03,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:31:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2022-01-10 01:31:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 01:31:03,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:03,016 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 01:31:03,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:31:03,016 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2022-01-10 01:31:03,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:03,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122623545] [2022-01-10 01:31:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:03,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:03,111 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 01:31:03,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:03,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122623545] [2022-01-10 01:31:03,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122623545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:03,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:03,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:31:03,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353702804] [2022-01-10 01:31:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:03,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:31:03,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:31:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:31:03,114 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 01:31:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:03,443 INFO L93 Difference]: Finished difference Result 4455 states and 6945 transitions. [2022-01-10 01:31:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:31:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 01:31:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:03,457 INFO L225 Difference]: With dead ends: 4455 [2022-01-10 01:31:03,457 INFO L226 Difference]: Without dead ends: 3717 [2022-01-10 01:31:03,458 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 01:31:03,460 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 904 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:31:03,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 1080 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2022-01-10 01:31:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1501. [2022-01-10 01:31:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.5333333333333334) internal successors, (2300), 1500 states have internal predecessors, (2300), 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 01:31:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2300 transitions. [2022-01-10 01:31:03,594 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2300 transitions. Word has length 52 [2022-01-10 01:31:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:03,596 INFO L470 AbstractCegarLoop]: Abstraction has 1501 states and 2300 transitions. [2022-01-10 01:31:03,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 01:31:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2300 transitions. [2022-01-10 01:31:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 01:31:03,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:03,600 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 01:31:03,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:31:03,600 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash 768629036, now seen corresponding path program 1 times [2022-01-10 01:31:03,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002296521] [2022-01-10 01:31:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:03,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:03,679 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 01:31:03,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:03,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002296521] [2022-01-10 01:31:03,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002296521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:03,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:03,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:31:03,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234081603] [2022-01-10 01:31:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:03,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:31:03,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:31:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:31:03,681 INFO L87 Difference]: Start difference. First operand 1501 states and 2300 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 01:31:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:04,156 INFO L93 Difference]: Finished difference Result 6501 states and 9920 transitions. [2022-01-10 01:31:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:31:04,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 01:31:04,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:04,171 INFO L225 Difference]: With dead ends: 6501 [2022-01-10 01:31:04,172 INFO L226 Difference]: Without dead ends: 5027 [2022-01-10 01:31:04,174 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 01:31:04,175 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 442 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:31:04,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 833 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:31:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2022-01-10 01:31:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5021. [2022-01-10 01:31:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.5163346613545816) internal successors, (7612), 5020 states have internal predecessors, (7612), 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 01:31:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7612 transitions. [2022-01-10 01:31:04,617 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7612 transitions. Word has length 53 [2022-01-10 01:31:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:04,618 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 7612 transitions. [2022-01-10 01:31:04,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 01:31:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7612 transitions. [2022-01-10 01:31:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:31:04,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:04,620 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 01:31:04,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:31:04,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:04,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:04,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1792030237, now seen corresponding path program 1 times [2022-01-10 01:31:04,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:04,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638222635] [2022-01-10 01:31:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:04,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:04,664 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 01:31:04,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:04,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638222635] [2022-01-10 01:31:04,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638222635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:04,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:04,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:31:04,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745944132] [2022-01-10 01:31:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:04,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:31:04,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:04,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:31:04,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:31:04,666 INFO L87 Difference]: Start difference. First operand 5021 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 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 01:31:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:05,569 INFO L93 Difference]: Finished difference Result 15009 states and 22782 transitions. [2022-01-10 01:31:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:31:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 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 01:31:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:05,598 INFO L225 Difference]: With dead ends: 15009 [2022-01-10 01:31:05,598 INFO L226 Difference]: Without dead ends: 10015 [2022-01-10 01:31:05,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:31:05,610 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 663 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:31:05,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 171 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:31:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10015 states. [2022-01-10 01:31:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10015 to 10013. [2022-01-10 01:31:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10013 states, 10012 states have (on average 1.5065920894926088) internal successors, (15084), 10012 states have internal predecessors, (15084), 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 01:31:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 15084 transitions. [2022-01-10 01:31:06,439 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 15084 transitions. Word has length 55 [2022-01-10 01:31:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:06,440 INFO L470 AbstractCegarLoop]: Abstraction has 10013 states and 15084 transitions. [2022-01-10 01:31:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 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 01:31:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 15084 transitions. [2022-01-10 01:31:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:31:06,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:06,441 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 01:31:06,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:31:06,442 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:06,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:06,443 INFO L85 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2022-01-10 01:31:06,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:06,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492750805] [2022-01-10 01:31:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:06,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:06,553 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 01:31:06,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492750805] [2022-01-10 01:31:06,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492750805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:06,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:06,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:31:06,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414366793] [2022-01-10 01:31:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:06,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:31:06,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:31:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:31:06,555 INFO L87 Difference]: Start difference. First operand 10013 states and 15084 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 01:31:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:08,114 INFO L93 Difference]: Finished difference Result 20511 states and 30653 transitions. [2022-01-10 01:31:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:31:08,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 01:31:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:08,162 INFO L225 Difference]: With dead ends: 20511 [2022-01-10 01:31:08,162 INFO L226 Difference]: Without dead ends: 20509 [2022-01-10 01:31:08,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:31:08,169 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 242 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:31:08,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 753 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2022-01-10 01:31:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 10525. [2022-01-10 01:31:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10525 states, 10524 states have (on average 1.4819460281261878) internal successors, (15596), 10524 states have internal predecessors, (15596), 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 01:31:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 15596 transitions. [2022-01-10 01:31:09,224 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 15596 transitions. Word has length 55 [2022-01-10 01:31:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:09,226 INFO L470 AbstractCegarLoop]: Abstraction has 10525 states and 15596 transitions. [2022-01-10 01:31:09,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 01:31:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 15596 transitions. [2022-01-10 01:31:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:31:09,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:09,227 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 01:31:09,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:31:09,227 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2022-01-10 01:31:09,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:09,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101817041] [2022-01-10 01:31:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:09,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:09,282 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 01:31:09,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:09,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101817041] [2022-01-10 01:31:09,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101817041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:09,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:09,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:09,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313110827] [2022-01-10 01:31:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:09,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:09,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:09,284 INFO L87 Difference]: Start difference. First operand 10525 states and 15596 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 01:31:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:10,212 INFO L93 Difference]: Finished difference Result 23387 states and 34588 transitions. [2022-01-10 01:31:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:10,212 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 01:31:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:10,234 INFO L225 Difference]: With dead ends: 23387 [2022-01-10 01:31:10,234 INFO L226 Difference]: Without dead ends: 12889 [2022-01-10 01:31:10,245 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 01:31:10,246 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 309 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 01:31:10,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 309 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12889 states. [2022-01-10 01:31:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12889 to 12887. [2022-01-10 01:31:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12887 states, 12886 states have (on average 1.4715194785038026) internal successors, (18962), 12886 states have internal predecessors, (18962), 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 01:31:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12887 states to 12887 states and 18962 transitions. [2022-01-10 01:31:11,445 INFO L78 Accepts]: Start accepts. Automaton has 12887 states and 18962 transitions. Word has length 56 [2022-01-10 01:31:11,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:11,445 INFO L470 AbstractCegarLoop]: Abstraction has 12887 states and 18962 transitions. [2022-01-10 01:31:11,445 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 01:31:11,445 INFO L276 IsEmpty]: Start isEmpty. Operand 12887 states and 18962 transitions. [2022-01-10 01:31:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 01:31:11,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:11,453 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] [2022-01-10 01:31:11,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:31:11,454 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:11,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:11,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2022-01-10 01:31:11,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:11,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635255109] [2022-01-10 01:31:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:11,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:31:11,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635255109] [2022-01-10 01:31:11,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635255109] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:31:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201051582] [2022-01-10 01:31:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:11,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:31:11,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:31:11,535 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 01:31:11,555 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 01:31:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:11,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 01:31:11,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:31:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:31:11,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:31:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:31:12,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201051582] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:31:12,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:31:12,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2022-01-10 01:31:12,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629136559] [2022-01-10 01:31:12,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:31:12,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:31:12,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:31:12,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:31:12,202 INFO L87 Difference]: Start difference. First operand 12887 states and 18962 transitions. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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 01:31:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:15,045 INFO L93 Difference]: Finished difference Result 43277 states and 63950 transitions. [2022-01-10 01:31:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:31:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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 77 [2022-01-10 01:31:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:15,134 INFO L225 Difference]: With dead ends: 43277 [2022-01-10 01:31:15,134 INFO L226 Difference]: Without dead ends: 32779 [2022-01-10 01:31:15,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:31:15,153 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 798 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:31:15,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 885 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32779 states. [2022-01-10 01:31:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32779 to 31743. [2022-01-10 01:31:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31743 states, 31742 states have (on average 1.461344590763027) internal successors, (46386), 31742 states have internal predecessors, (46386), 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 01:31:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31743 states to 31743 states and 46386 transitions. [2022-01-10 01:31:18,085 INFO L78 Accepts]: Start accepts. Automaton has 31743 states and 46386 transitions. Word has length 77 [2022-01-10 01:31:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:18,085 INFO L470 AbstractCegarLoop]: Abstraction has 31743 states and 46386 transitions. [2022-01-10 01:31:18,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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 01:31:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 31743 states and 46386 transitions. [2022-01-10 01:31:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:31:18,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:18,094 INFO L514 BasicCegarLoop]: trace histogram [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 01:31:18,113 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 01:31:18,307 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,SelfDestructingSolverStorable9 [2022-01-10 01:31:18,308 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2022-01-10 01:31:18,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:18,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501699431] [2022-01-10 01:31:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:18,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:31:18,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:18,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501699431] [2022-01-10 01:31:18,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501699431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:18,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:18,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:18,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172801074] [2022-01-10 01:31:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:18,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:18,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:18,344 INFO L87 Difference]: Start difference. First operand 31743 states and 46386 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 01:31:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:22,450 INFO L93 Difference]: Finished difference Result 75584 states and 110252 transitions. [2022-01-10 01:31:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:22,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 01:31:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:22,550 INFO L225 Difference]: With dead ends: 75584 [2022-01-10 01:31:22,550 INFO L226 Difference]: Without dead ends: 50166 [2022-01-10 01:31:22,582 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 01:31:22,584 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 311 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 01:31:22,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 311 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50166 states. [2022-01-10 01:31:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50166 to 48020. [2022-01-10 01:31:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48020 states, 48019 states have (on average 1.4440117453507986) internal successors, (69340), 48019 states have internal predecessors, (69340), 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 01:31:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48020 states to 48020 states and 69340 transitions. [2022-01-10 01:31:27,226 INFO L78 Accepts]: Start accepts. Automaton has 48020 states and 69340 transitions. Word has length 78 [2022-01-10 01:31:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:27,226 INFO L470 AbstractCegarLoop]: Abstraction has 48020 states and 69340 transitions. [2022-01-10 01:31:27,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 01:31:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 48020 states and 69340 transitions. [2022-01-10 01:31:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:31:27,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:27,234 INFO L514 BasicCegarLoop]: trace histogram [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 01:31:27,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:31:27,234 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:27,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:27,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2022-01-10 01:31:27,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:27,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037162225] [2022-01-10 01:31:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:27,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:31:27,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:27,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037162225] [2022-01-10 01:31:27,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037162225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:27,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:27,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:27,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69992543] [2022-01-10 01:31:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:27,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:27,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:27,263 INFO L87 Difference]: Start difference. First operand 48020 states and 69340 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 01:31:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:33,298 INFO L93 Difference]: Finished difference Result 101070 states and 145289 transitions. [2022-01-10 01:31:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:33,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 01:31:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:33,407 INFO L225 Difference]: With dead ends: 101070 [2022-01-10 01:31:33,407 INFO L226 Difference]: Without dead ends: 68220 [2022-01-10 01:31:33,443 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 01:31:33,444 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 330 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 01:31:33,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 330 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68220 states. [2022-01-10 01:31:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68220 to 65282. [2022-01-10 01:31:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65282 states, 65281 states have (on average 1.4230020986198129) internal successors, (92895), 65281 states have internal predecessors, (92895), 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 01:31:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65282 states to 65282 states and 92895 transitions. [2022-01-10 01:31:39,845 INFO L78 Accepts]: Start accepts. Automaton has 65282 states and 92895 transitions. Word has length 78 [2022-01-10 01:31:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:39,846 INFO L470 AbstractCegarLoop]: Abstraction has 65282 states and 92895 transitions. [2022-01-10 01:31:39,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 01:31:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 65282 states and 92895 transitions. [2022-01-10 01:31:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:31:39,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:39,855 INFO L514 BasicCegarLoop]: trace histogram [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 01:31:39,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:31:39,855 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2022-01-10 01:31:39,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:39,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456438056] [2022-01-10 01:31:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:39,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:31:39,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:39,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456438056] [2022-01-10 01:31:39,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456438056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:39,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:39,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:31:39,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598187789] [2022-01-10 01:31:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:39,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:31:39,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:31:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:31:39,880 INFO L87 Difference]: Start difference. First operand 65282 states and 92895 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 01:31:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:31:46,756 INFO L93 Difference]: Finished difference Result 107337 states and 151812 transitions. [2022-01-10 01:31:46,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:31:46,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 01:31:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:31:46,872 INFO L225 Difference]: With dead ends: 107337 [2022-01-10 01:31:46,873 INFO L226 Difference]: Without dead ends: 67827 [2022-01-10 01:31:46,911 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 01:31:46,911 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 349 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 01:31:46,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 349 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:31:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67827 states. [2022-01-10 01:31:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67827 to 64906. [2022-01-10 01:31:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64906 states, 64905 states have (on average 1.3999845928664971) internal successors, (90866), 64905 states have internal predecessors, (90866), 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 01:31:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64906 states to 64906 states and 90866 transitions. [2022-01-10 01:31:53,230 INFO L78 Accepts]: Start accepts. Automaton has 64906 states and 90866 transitions. Word has length 78 [2022-01-10 01:31:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:31:53,231 INFO L470 AbstractCegarLoop]: Abstraction has 64906 states and 90866 transitions. [2022-01-10 01:31:53,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 01:31:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 64906 states and 90866 transitions. [2022-01-10 01:31:53,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:31:53,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:31:53,239 INFO L514 BasicCegarLoop]: trace histogram [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 01:31:53,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:31:53,239 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:31:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:31:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2022-01-10 01:31:53,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:31:53,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804743014] [2022-01-10 01:31:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:31:53,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:31:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:31:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:31:53,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:31:53,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804743014] [2022-01-10 01:31:53,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804743014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:31:53,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:31:53,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:31:53,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957454683] [2022-01-10 01:31:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:31:53,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:31:53,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:31:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:31:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:31:53,290 INFO L87 Difference]: Start difference. First operand 64906 states and 90866 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 01:32:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:32:05,463 INFO L93 Difference]: Finished difference Result 151436 states and 213893 transitions. [2022-01-10 01:32:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:32:05,464 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 78 [2022-01-10 01:32:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:32:05,761 INFO L225 Difference]: With dead ends: 151436 [2022-01-10 01:32:05,761 INFO L226 Difference]: Without dead ends: 126470 [2022-01-10 01:32:05,799 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 01:32:05,800 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 798 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:32:05,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1032 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:32:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126470 states.