/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:00:41,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:00:41,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:00:41,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:00:41,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:00:41,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:00:41,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:00:41,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:00:41,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:00:41,580 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:00:41,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:00:41,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:00:41,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:00:41,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:00:41,583 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:00:41,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:00:41,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:00:41,584 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:00:41,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:00:41,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:00:41,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:00:41,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:00:41,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:00:41,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:00:41,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:00:41,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:00:41,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:00:41,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:00:41,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:00:41,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:00:41,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:00:41,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:00:41,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:00:41,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:00:41,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:00:41,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:00:41,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:00:41,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:00:41,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:00:41,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:00:41,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:00:41,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:00:41,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:00:41,592 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:00:41,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:00:41,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:00:41,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:00:41,802 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:00:41,802 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:00:41,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2023-12-15 19:00:42,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:00:43,300 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:00:43,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2023-12-15 19:00:43,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6cbe9f8/cb745073ca544cd78cf22997bb48685b/FLAGac5b76eab [2023-12-15 19:00:43,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6cbe9f8/cb745073ca544cd78cf22997bb48685b [2023-12-15 19:00:43,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:00:43,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:00:43,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:00:43,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:00:43,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:00:43,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:00:43" (1/1) ... [2023-12-15 19:00:43,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f183e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:43, skipping insertion in model container [2023-12-15 19:00:43,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:00:43" (1/1) ... [2023-12-15 19:00:43,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:00:43,623 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13.c[5940,5953] [2023-12-15 19:00:43,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:00:43,989 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:00:44,019 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13.c[5940,5953] [2023-12-15 19:00:44,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:00:44,204 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:00:44,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44 WrapperNode [2023-12-15 19:00:44,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:00:44,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:00:44,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:00:44,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:00:44,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,429 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2023-12-15 19:00:44,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:00:44,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:00:44,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:00:44,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:00:44,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,528 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:00:44,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:00:44,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:00:44,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:00:44,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:00:44,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (1/1) ... [2023-12-15 19:00:44,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:00:44,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:00:44,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:00:44,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:00:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:00:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:00:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:00:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:00:44,788 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:00:44,790 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:00:47,422 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:00:47,478 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:00:47,478 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:00:47,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:00:47 BoogieIcfgContainer [2023-12-15 19:00:47,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:00:47,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:00:47,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:00:47,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:00:47,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:00:43" (1/3) ... [2023-12-15 19:00:47,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeff379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:00:47, skipping insertion in model container [2023-12-15 19:00:47,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:44" (2/3) ... [2023-12-15 19:00:47,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeff379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:00:47, skipping insertion in model container [2023-12-15 19:00:47,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:00:47" (3/3) ... [2023-12-15 19:00:47,486 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label13.c [2023-12-15 19:00:47,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:00:47,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:00:47,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:00:47,568 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7732908a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:00:47,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:00:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-15 19:00:47,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:47,583 INFO L195 NwaCegarLoop]: 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] [2023-12-15 19:00:47,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:47,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash -536406878, now seen corresponding path program 1 times [2023-12-15 19:00:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237473914] [2023-12-15 19:00:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:47,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:47,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237473914] [2023-12-15 19:00:47,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237473914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:47,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:47,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075885004] [2023-12-15 19:00:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:00:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:00:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:00:47,779 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:47,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:47,841 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-12-15 19:00:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:00:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-15 19:00:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:47,859 INFO L225 Difference]: With dead ends: 723 [2023-12-15 19:00:47,859 INFO L226 Difference]: Without dead ends: 360 [2023-12-15 19:00:47,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:00:47,865 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:47,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:00:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-15 19:00:47,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-15 19:00:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-12-15 19:00:47,919 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 47 [2023-12-15 19:00:47,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:47,919 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-12-15 19:00:47,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-12-15 19:00:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-15 19:00:47,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:47,921 INFO L195 NwaCegarLoop]: 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] [2023-12-15 19:00:47,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:00:47,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:47,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1820923160, now seen corresponding path program 1 times [2023-12-15 19:00:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883183103] [2023-12-15 19:00:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:48,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:48,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883183103] [2023-12-15 19:00:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883183103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:48,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7776948] [2023-12-15 19:00:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:48,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:48,146 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:49,765 INFO L93 Difference]: Finished difference Result 1025 states and 1788 transitions. [2023-12-15 19:00:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:49,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-15 19:00:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:49,772 INFO L225 Difference]: With dead ends: 1025 [2023-12-15 19:00:49,772 INFO L226 Difference]: Without dead ends: 666 [2023-12-15 19:00:49,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:49,775 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 280 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:49,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:00:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-15 19:00:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2023-12-15 19:00:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.4796380090497738) internal successors, (981), 663 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 981 transitions. [2023-12-15 19:00:49,801 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 981 transitions. Word has length 47 [2023-12-15 19:00:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:49,802 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 981 transitions. [2023-12-15 19:00:49,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 981 transitions. [2023-12-15 19:00:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 19:00:49,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:49,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:49,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:00:49,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:49,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash -952981529, now seen corresponding path program 1 times [2023-12-15 19:00:49,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:49,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895034496] [2023-12-15 19:00:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:49,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:49,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895034496] [2023-12-15 19:00:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895034496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:49,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793657108] [2023-12-15 19:00:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:49,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:49,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:49,968 INFO L87 Difference]: Start difference. First operand 664 states and 981 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:51,892 INFO L93 Difference]: Finished difference Result 1952 states and 2892 transitions. [2023-12-15 19:00:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:51,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-15 19:00:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:51,901 INFO L225 Difference]: With dead ends: 1952 [2023-12-15 19:00:51,901 INFO L226 Difference]: Without dead ends: 1289 [2023-12-15 19:00:51,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:51,904 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 256 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:51,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 324 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:00:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-12-15 19:00:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1281. [2023-12-15 19:00:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3984375) internal successors, (1790), 1280 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1790 transitions. [2023-12-15 19:00:51,933 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1790 transitions. Word has length 122 [2023-12-15 19:00:51,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:51,934 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1790 transitions. [2023-12-15 19:00:51,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1790 transitions. [2023-12-15 19:00:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 19:00:51,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:51,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:51,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:00:51,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:51,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash 761477533, now seen corresponding path program 1 times [2023-12-15 19:00:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598968342] [2023-12-15 19:00:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:52,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598968342] [2023-12-15 19:00:52,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598968342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:52,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:52,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005235812] [2023-12-15 19:00:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:52,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:52,066 INFO L87 Difference]: Start difference. First operand 1281 states and 1790 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:53,784 INFO L93 Difference]: Finished difference Result 3763 states and 5259 transitions. [2023-12-15 19:00:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-12-15 19:00:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:53,793 INFO L225 Difference]: With dead ends: 3763 [2023-12-15 19:00:53,793 INFO L226 Difference]: Without dead ends: 2483 [2023-12-15 19:00:53,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:53,803 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:53,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 364 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:00:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2023-12-15 19:00:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2181. [2023-12-15 19:00:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.2811926605504587) internal successors, (2793), 2180 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2793 transitions. [2023-12-15 19:00:53,842 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2793 transitions. Word has length 126 [2023-12-15 19:00:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:53,842 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 2793 transitions. [2023-12-15 19:00:53,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2793 transitions. [2023-12-15 19:00:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-15 19:00:53,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:53,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:00:53,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:53,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1598072451, now seen corresponding path program 1 times [2023-12-15 19:00:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:53,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077242731] [2023-12-15 19:00:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:53,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 19:00:54,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:54,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077242731] [2023-12-15 19:00:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077242731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:54,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:54,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665500016] [2023-12-15 19:00:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:54,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:54,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:54,181 INFO L87 Difference]: Start difference. First operand 2181 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:55,553 INFO L93 Difference]: Finished difference Result 6165 states and 7957 transitions. [2023-12-15 19:00:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:55,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 217 [2023-12-15 19:00:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:55,567 INFO L225 Difference]: With dead ends: 6165 [2023-12-15 19:00:55,567 INFO L226 Difference]: Without dead ends: 3985 [2023-12-15 19:00:55,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:55,571 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:55,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:00:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2023-12-15 19:00:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3681. [2023-12-15 19:00:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.2195652173913043) internal successors, (4488), 3680 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4488 transitions. [2023-12-15 19:00:55,635 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4488 transitions. Word has length 217 [2023-12-15 19:00:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:55,636 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 4488 transitions. [2023-12-15 19:00:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4488 transitions. [2023-12-15 19:00:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-15 19:00:55,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:55,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:00:55,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:55,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash -278960253, now seen corresponding path program 1 times [2023-12-15 19:00:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:55,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924342356] [2023-12-15 19:00:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-15 19:00:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924342356] [2023-12-15 19:00:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924342356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986714339] [2023-12-15 19:00:56,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:56,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:56,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:56,272 INFO L87 Difference]: Start difference. First operand 3681 states and 4488 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:57,519 INFO L93 Difference]: Finished difference Result 7660 states and 9286 transitions. [2023-12-15 19:00:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:57,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 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 319 [2023-12-15 19:00:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:57,532 INFO L225 Difference]: With dead ends: 7660 [2023-12-15 19:00:57,533 INFO L226 Difference]: Without dead ends: 3980 [2023-12-15 19:00:57,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:57,538 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:57,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:00:57,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-15 19:00:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2023-12-15 19:00:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3979 states have (on average 1.204574013571249) internal successors, (4793), 3979 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4793 transitions. [2023-12-15 19:00:57,632 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4793 transitions. Word has length 319 [2023-12-15 19:00:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:57,633 INFO L495 AbstractCegarLoop]: Abstraction has 3980 states and 4793 transitions. [2023-12-15 19:00:57,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4793 transitions. [2023-12-15 19:00:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-15 19:00:57,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:57,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:57,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:00:57,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:57,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash 776705032, now seen corresponding path program 1 times [2023-12-15 19:00:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048109710] [2023-12-15 19:00:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-15 19:00:57,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:57,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048109710] [2023-12-15 19:00:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048109710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:57,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:57,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:57,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167825339] [2023-12-15 19:00:57,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:57,942 INFO L87 Difference]: Start difference. First operand 3980 states and 4793 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:59,611 INFO L93 Difference]: Finished difference Result 9464 states and 11667 transitions. [2023-12-15 19:00:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:59,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 334 [2023-12-15 19:00:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:59,629 INFO L225 Difference]: With dead ends: 9464 [2023-12-15 19:00:59,630 INFO L226 Difference]: Without dead ends: 5784 [2023-12-15 19:00:59,635 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:00:59,636 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 268 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:59,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 668 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:00:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2023-12-15 19:00:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5782. [2023-12-15 19:00:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5781 states have (on average 1.1672720982528975) internal successors, (6748), 5781 states have internal predecessors, (6748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 6748 transitions. [2023-12-15 19:00:59,784 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 6748 transitions. Word has length 334 [2023-12-15 19:00:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:59,785 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 6748 transitions. [2023-12-15 19:00:59,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:00:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 6748 transitions. [2023-12-15 19:00:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-15 19:00:59,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:59,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:00:59,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1860848299, now seen corresponding path program 1 times [2023-12-15 19:00:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970742996] [2023-12-15 19:00:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 91 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:00,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970742996] [2023-12-15 19:01:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970742996] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814555593] [2023-12-15 19:01:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:00,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:00,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:00,878 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) [2023-12-15 19:01:00,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:01:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:01,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:01,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:01,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:01,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814555593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:01,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:01,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637048762] [2023-12-15 19:01:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:01,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:01,264 INFO L87 Difference]: Start difference. First operand 5782 states and 6748 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:02,944 INFO L93 Difference]: Finished difference Result 13365 states and 15910 transitions. [2023-12-15 19:01:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:02,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 393 [2023-12-15 19:01:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:02,964 INFO L225 Difference]: With dead ends: 13365 [2023-12-15 19:01:02,965 INFO L226 Difference]: Without dead ends: 7883 [2023-12-15 19:01:02,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:02,973 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 273 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:02,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 261 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:01:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2023-12-15 19:01:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 7280. [2023-12-15 19:01:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7280 states, 7279 states have (on average 1.1614232724275313) internal successors, (8454), 7279 states have internal predecessors, (8454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 8454 transitions. [2023-12-15 19:01:03,123 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 8454 transitions. Word has length 393 [2023-12-15 19:01:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:03,124 INFO L495 AbstractCegarLoop]: Abstraction has 7280 states and 8454 transitions. [2023-12-15 19:01:03,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 8454 transitions. [2023-12-15 19:01:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-12-15 19:01:03,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:03,133 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:03,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:03,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:03,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -524586257, now seen corresponding path program 1 times [2023-12-15 19:01:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261019901] [2023-12-15 19:01:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-12-15 19:01:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261019901] [2023-12-15 19:01:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261019901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:03,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:03,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108860623] [2023-12-15 19:01:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:03,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:03,744 INFO L87 Difference]: Start difference. First operand 7280 states and 8454 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:05,073 INFO L93 Difference]: Finished difference Result 16058 states and 18978 transitions. [2023-12-15 19:01:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 498 [2023-12-15 19:01:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:05,111 INFO L225 Difference]: With dead ends: 16058 [2023-12-15 19:01:05,111 INFO L226 Difference]: Without dead ends: 9078 [2023-12-15 19:01:05,120 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:05,122 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 283 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:05,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 608 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9078 states. [2023-12-15 19:01:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9078 to 9077. [2023-12-15 19:01:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9077 states, 9076 states have (on average 1.145107977082415) internal successors, (10393), 9076 states have internal predecessors, (10393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9077 states to 9077 states and 10393 transitions. [2023-12-15 19:01:05,280 INFO L78 Accepts]: Start accepts. Automaton has 9077 states and 10393 transitions. Word has length 498 [2023-12-15 19:01:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:05,281 INFO L495 AbstractCegarLoop]: Abstraction has 9077 states and 10393 transitions. [2023-12-15 19:01:05,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9077 states and 10393 transitions. [2023-12-15 19:01:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-15 19:01:05,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:05,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:05,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:01:05,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:05,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 77193200, now seen corresponding path program 1 times [2023-12-15 19:01:05,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50015040] [2023-12-15 19:01:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 421 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-15 19:01:05,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50015040] [2023-12-15 19:01:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50015040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19876668] [2023-12-15 19:01:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:05,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:05,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:05,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:01:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:06,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:06,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-15 19:01:06,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19876668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:06,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838538382] [2023-12-15 19:01:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:06,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:06,446 INFO L87 Difference]: Start difference. First operand 9077 states and 10393 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:08,499 INFO L93 Difference]: Finished difference Result 20545 states and 23797 transitions. [2023-12-15 19:01:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:08,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 523 [2023-12-15 19:01:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:08,530 INFO L225 Difference]: With dead ends: 20545 [2023-12-15 19:01:08,530 INFO L226 Difference]: Without dead ends: 11768 [2023-12-15 19:01:08,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:08,542 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 122 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:08,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:01:08,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2023-12-15 19:01:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 7576. [2023-12-15 19:01:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7576 states, 7575 states have (on average 1.1601320132013202) internal successors, (8788), 7575 states have internal predecessors, (8788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 8788 transitions. [2023-12-15 19:01:08,657 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 8788 transitions. Word has length 523 [2023-12-15 19:01:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:08,658 INFO L495 AbstractCegarLoop]: Abstraction has 7576 states and 8788 transitions. [2023-12-15 19:01:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 8788 transitions. [2023-12-15 19:01:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-12-15 19:01:08,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:08,672 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:08,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:01:08,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:08,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash -122992630, now seen corresponding path program 1 times [2023-12-15 19:01:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:08,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065428119] [2023-12-15 19:01:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 547 proven. 39 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-15 19:01:09,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065428119] [2023-12-15 19:01:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065428119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738220259] [2023-12-15 19:01:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:09,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:09,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:09,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:09,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:01:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:09,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:01:09,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-15 19:01:10,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738220259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:10,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962951689] [2023-12-15 19:01:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:10,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:01:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:01:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:10,641 INFO L87 Difference]: Start difference. First operand 7576 states and 8788 transitions. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:12,323 INFO L93 Difference]: Finished difference Result 16050 states and 18578 transitions. [2023-12-15 19:01:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 574 [2023-12-15 19:01:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:12,340 INFO L225 Difference]: With dead ends: 16050 [2023-12-15 19:01:12,340 INFO L226 Difference]: Without dead ends: 8475 [2023-12-15 19:01:12,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:12,349 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 317 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:12,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 358 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:01:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8475 states. [2023-12-15 19:01:12,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8175. [2023-12-15 19:01:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8175 states, 8174 states have (on average 1.150721800831906) internal successors, (9406), 8174 states have internal predecessors, (9406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8175 states to 8175 states and 9406 transitions. [2023-12-15 19:01:12,443 INFO L78 Accepts]: Start accepts. Automaton has 8175 states and 9406 transitions. Word has length 574 [2023-12-15 19:01:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:12,443 INFO L495 AbstractCegarLoop]: Abstraction has 8175 states and 9406 transitions. [2023-12-15 19:01:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8175 states and 9406 transitions. [2023-12-15 19:01:12,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-12-15 19:01:12,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:12,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:12,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:12,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:12,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:12,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -801126248, now seen corresponding path program 1 times [2023-12-15 19:01:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601607918] [2023-12-15 19:01:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-15 19:01:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601607918] [2023-12-15 19:01:13,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601607918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:13,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854395036] [2023-12-15 19:01:13,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:13,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:13,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:13,150 INFO L87 Difference]: Start difference. First operand 8175 states and 9406 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:14,726 INFO L93 Difference]: Finished difference Result 19664 states and 22799 transitions. [2023-12-15 19:01:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:14,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 574 [2023-12-15 19:01:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:14,745 INFO L225 Difference]: With dead ends: 19664 [2023-12-15 19:01:14,745 INFO L226 Difference]: Without dead ends: 11490 [2023-12-15 19:01:14,754 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:14,755 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 290 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:14,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 312 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:01:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11490 states. [2023-12-15 19:01:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11490 to 8177. [2023-12-15 19:01:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8177 states, 8176 states have (on average 1.150807240704501) internal successors, (9409), 8176 states have internal predecessors, (9409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8177 states to 8177 states and 9409 transitions. [2023-12-15 19:01:14,858 INFO L78 Accepts]: Start accepts. Automaton has 8177 states and 9409 transitions. Word has length 574 [2023-12-15 19:01:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:14,859 INFO L495 AbstractCegarLoop]: Abstraction has 8177 states and 9409 transitions. [2023-12-15 19:01:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8177 states and 9409 transitions. [2023-12-15 19:01:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-15 19:01:14,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:14,866 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:14,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:01:14,867 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:14,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash 643538713, now seen corresponding path program 1 times [2023-12-15 19:01:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69212098] [2023-12-15 19:01:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 242 proven. 188 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-15 19:01:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69212098] [2023-12-15 19:01:15,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69212098] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444180806] [2023-12-15 19:01:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:15,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:15,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:15,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:01:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:16,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:01:16,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2023-12-15 19:01:16,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444180806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399542271] [2023-12-15 19:01:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:01:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:01:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:16,754 INFO L87 Difference]: Start difference. First operand 8177 states and 9409 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:18,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:18,825 INFO L93 Difference]: Finished difference Result 26599 states and 30970 transitions. [2023-12-15 19:01:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:18,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 582 [2023-12-15 19:01:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:18,848 INFO L225 Difference]: With dead ends: 26599 [2023-12-15 19:01:18,848 INFO L226 Difference]: Without dead ends: 18423 [2023-12-15 19:01:18,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:18,860 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 678 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:18,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 167 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:01:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18423 states. [2023-12-15 19:01:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18423 to 18115. [2023-12-15 19:01:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18115 states, 18114 states have (on average 1.1605388097604064) internal successors, (21022), 18114 states have internal predecessors, (21022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18115 states to 18115 states and 21022 transitions. [2023-12-15 19:01:19,053 INFO L78 Accepts]: Start accepts. Automaton has 18115 states and 21022 transitions. Word has length 582 [2023-12-15 19:01:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:19,054 INFO L495 AbstractCegarLoop]: Abstraction has 18115 states and 21022 transitions. [2023-12-15 19:01:19,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 18115 states and 21022 transitions. [2023-12-15 19:01:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-12-15 19:01:19,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:19,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:19,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:19,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:19,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:19,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2028158622, now seen corresponding path program 1 times [2023-12-15 19:01:19,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:19,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932060424] [2023-12-15 19:01:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-12-15 19:01:19,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932060424] [2023-12-15 19:01:19,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932060424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:19,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:19,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:19,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433022608] [2023-12-15 19:01:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:19,558 INFO L87 Difference]: Start difference. First operand 18115 states and 21022 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:21,096 INFO L93 Difference]: Finished difference Result 43998 states and 51400 transitions. [2023-12-15 19:01:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:21,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 585 [2023-12-15 19:01:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:21,129 INFO L225 Difference]: With dead ends: 43998 [2023-12-15 19:01:21,129 INFO L226 Difference]: Without dead ends: 27980 [2023-12-15 19:01:21,147 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:21,148 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 306 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:21,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 239 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27980 states. [2023-12-15 19:01:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27980 to 24990. [2023-12-15 19:01:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24990 states, 24989 states have (on average 1.157869462563528) internal successors, (28934), 24989 states have internal predecessors, (28934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24990 states to 24990 states and 28934 transitions. [2023-12-15 19:01:21,443 INFO L78 Accepts]: Start accepts. Automaton has 24990 states and 28934 transitions. Word has length 585 [2023-12-15 19:01:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:21,443 INFO L495 AbstractCegarLoop]: Abstraction has 24990 states and 28934 transitions. [2023-12-15 19:01:21,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24990 states and 28934 transitions. [2023-12-15 19:01:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2023-12-15 19:01:21,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:21,450 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:21,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:01:21,450 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:21,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1866548302, now seen corresponding path program 1 times [2023-12-15 19:01:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:21,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41648355] [2023-12-15 19:01:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:21,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-12-15 19:01:21,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:21,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41648355] [2023-12-15 19:01:21,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41648355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:21,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:21,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:21,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137209121] [2023-12-15 19:01:21,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:21,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:21,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:21,790 INFO L87 Difference]: Start difference. First operand 24990 states and 28934 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:23,340 INFO L93 Difference]: Finished difference Result 55357 states and 63925 transitions. [2023-12-15 19:01:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 597 [2023-12-15 19:01:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:23,370 INFO L225 Difference]: With dead ends: 55357 [2023-12-15 19:01:23,370 INFO L226 Difference]: Without dead ends: 26780 [2023-12-15 19:01:23,388 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:23,389 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 341 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:23,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 414 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2023-12-15 19:01:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 22593. [2023-12-15 19:01:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22593 states, 22592 states have (on average 1.0762659348441925) internal successors, (24315), 22592 states have internal predecessors, (24315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22593 states to 22593 states and 24315 transitions. [2023-12-15 19:01:23,643 INFO L78 Accepts]: Start accepts. Automaton has 22593 states and 24315 transitions. Word has length 597 [2023-12-15 19:01:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:23,644 INFO L495 AbstractCegarLoop]: Abstraction has 22593 states and 24315 transitions. [2023-12-15 19:01:23,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22593 states and 24315 transitions. [2023-12-15 19:01:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-15 19:01:23,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:23,656 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:23,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:01:23,657 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:23,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1064220007, now seen corresponding path program 1 times [2023-12-15 19:01:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:23,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632100794] [2023-12-15 19:01:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:23,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 657 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-12-15 19:01:24,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:24,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632100794] [2023-12-15 19:01:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632100794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615015035] [2023-12-15 19:01:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:24,142 INFO L87 Difference]: Start difference. First operand 22593 states and 24315 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:25,060 INFO L93 Difference]: Finished difference Result 43984 states and 47407 transitions. [2023-12-15 19:01:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:25,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 722 [2023-12-15 19:01:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:25,082 INFO L225 Difference]: With dead ends: 43984 [2023-12-15 19:01:25,082 INFO L226 Difference]: Without dead ends: 22890 [2023-12-15 19:01:25,096 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:25,097 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 463 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:25,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 68 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:01:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22890 states. [2023-12-15 19:01:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22890 to 22591. [2023-12-15 19:01:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22591 states, 22590 states have (on average 1.0760956175298806) internal successors, (24309), 22590 states have internal predecessors, (24309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22591 states to 22591 states and 24309 transitions. [2023-12-15 19:01:25,447 INFO L78 Accepts]: Start accepts. Automaton has 22591 states and 24309 transitions. Word has length 722 [2023-12-15 19:01:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 22591 states and 24309 transitions. [2023-12-15 19:01:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 22591 states and 24309 transitions. [2023-12-15 19:01:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-12-15 19:01:25,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:25,460 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:25,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:01:25,460 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:25,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1415761114, now seen corresponding path program 1 times [2023-12-15 19:01:25,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:25,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753217645] [2023-12-15 19:01:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-15 19:01:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753217645] [2023-12-15 19:01:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753217645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:25,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:01:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766789655] [2023-12-15 19:01:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:01:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:01:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:01:25,893 INFO L87 Difference]: Start difference. First operand 22591 states and 24309 transitions. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:27,387 INFO L93 Difference]: Finished difference Result 49974 states and 53760 transitions. [2023-12-15 19:01:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:27,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 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 736 [2023-12-15 19:01:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:27,419 INFO L225 Difference]: With dead ends: 49974 [2023-12-15 19:01:27,419 INFO L226 Difference]: Without dead ends: 28882 [2023-12-15 19:01:27,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:01:27,434 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 632 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:27,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 445 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28882 states. [2023-12-15 19:01:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28882 to 27684. [2023-12-15 19:01:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27684 states, 27683 states have (on average 1.0596394899396742) internal successors, (29334), 27683 states have internal predecessors, (29334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27684 states to 27684 states and 29334 transitions. [2023-12-15 19:01:27,713 INFO L78 Accepts]: Start accepts. Automaton has 27684 states and 29334 transitions. Word has length 736 [2023-12-15 19:01:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:27,713 INFO L495 AbstractCegarLoop]: Abstraction has 27684 states and 29334 transitions. [2023-12-15 19:01:27,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 27684 states and 29334 transitions. [2023-12-15 19:01:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-12-15 19:01:27,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:27,724 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:27,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:01:27,724 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:27,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1534208815, now seen corresponding path program 1 times [2023-12-15 19:01:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:27,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803179216] [2023-12-15 19:01:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 757 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-15 19:01:28,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803179216] [2023-12-15 19:01:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803179216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:28,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:28,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084031770] [2023-12-15 19:01:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:28,269 INFO L87 Difference]: Start difference. First operand 27684 states and 29334 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:29,247 INFO L93 Difference]: Finished difference Result 55367 states and 58667 transitions. [2023-12-15 19:01:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:29,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 756 [2023-12-15 19:01:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:29,275 INFO L225 Difference]: With dead ends: 55367 [2023-12-15 19:01:29,275 INFO L226 Difference]: Without dead ends: 27684 [2023-12-15 19:01:29,290 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:29,290 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 226 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:29,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 527 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:01:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27684 states. [2023-12-15 19:01:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27684 to 27684. [2023-12-15 19:01:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27684 states, 27683 states have (on average 1.0393382220135101) internal successors, (28772), 27683 states have internal predecessors, (28772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27684 states to 27684 states and 28772 transitions. [2023-12-15 19:01:29,507 INFO L78 Accepts]: Start accepts. Automaton has 27684 states and 28772 transitions. Word has length 756 [2023-12-15 19:01:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:29,507 INFO L495 AbstractCegarLoop]: Abstraction has 27684 states and 28772 transitions. [2023-12-15 19:01:29,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 27684 states and 28772 transitions. [2023-12-15 19:01:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-12-15 19:01:29,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:29,517 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:29,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:01:29,518 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:29,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1275747835, now seen corresponding path program 1 times [2023-12-15 19:01:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:29,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504136454] [2023-12-15 19:01:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-15 19:01:29,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:29,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504136454] [2023-12-15 19:01:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504136454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:29,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:29,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:29,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115909008] [2023-12-15 19:01:29,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:29,974 INFO L87 Difference]: Start difference. First operand 27684 states and 28772 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:30,975 INFO L93 Difference]: Finished difference Result 55360 states and 57509 transitions. [2023-12-15 19:01:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:30,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 758 [2023-12-15 19:01:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:31,008 INFO L225 Difference]: With dead ends: 55360 [2023-12-15 19:01:31,009 INFO L226 Difference]: Without dead ends: 29175 [2023-12-15 19:01:31,025 INFO L412 NwaCegarLoop]: 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 [2023-12-15 19:01:31,025 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 358 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:31,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 454 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:01:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29175 states. [2023-12-15 19:01:31,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29175 to 15650. [2023-12-15 19:01:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15650 states, 15649 states have (on average 1.0381494025177327) internal successors, (16246), 15649 states have internal predecessors, (16246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15650 states to 15650 states and 16246 transitions. [2023-12-15 19:01:31,313 INFO L78 Accepts]: Start accepts. Automaton has 15650 states and 16246 transitions. Word has length 758 [2023-12-15 19:01:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:31,313 INFO L495 AbstractCegarLoop]: Abstraction has 15650 states and 16246 transitions. [2023-12-15 19:01:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 15650 states and 16246 transitions. [2023-12-15 19:01:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-15 19:01:31,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:31,322 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:31,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:01:31,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:31,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:31,322 INFO L85 PathProgramCache]: Analyzing trace with hash -961681446, now seen corresponding path program 1 times [2023-12-15 19:01:31,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557595337] [2023-12-15 19:01:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:31,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 621 proven. 188 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-15 19:01:32,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:32,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557595337] [2023-12-15 19:01:32,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557595337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:32,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141443542] [2023-12-15 19:01:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:32,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:32,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:32,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:32,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:01:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:32,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:01:32,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 713 proven. 76 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-15 19:01:33,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:01:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2023-12-15 19:01:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141443542] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:34,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:01:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 8 [2023-12-15 19:01:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055531817] [2023-12-15 19:01:34,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:34,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:01:34,800 INFO L87 Difference]: Start difference. First operand 15650 states and 16246 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 19:01:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:35,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:01:35,275 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 114 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:35,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 15 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:01:35,277 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:01:35,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 19:01:35,303 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:01:35,303 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:01:35,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:35,486 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (15650states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1321 states constructed, input type IntersectNwa). [2023-12-15 19:01:35,490 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:35,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:01:35,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:01:35 BoogieIcfgContainer [2023-12-15 19:01:35,495 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:01:35,496 INFO L158 Benchmark]: Toolchain (without parser) took 52152.78ms. Allocated memory was 295.7MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 238.7MB in the beginning and 605.9MB in the end (delta: -367.2MB). Peak memory consumption was 947.2MB. Max. memory is 8.0GB. [2023-12-15 19:01:35,496 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 198.2MB. Free memory was 146.9MB in the beginning and 146.7MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:01:35,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 859.91ms. Allocated memory is still 295.7MB. Free memory was 238.7MB in the beginning and 159.0MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2023-12-15 19:01:35,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 223.11ms. Allocated memory is still 295.7MB. Free memory was 159.0MB in the beginning and 220.0MB in the end (delta: -61.0MB). Peak memory consumption was 15.0MB. Max. memory is 8.0GB. [2023-12-15 19:01:35,497 INFO L158 Benchmark]: Boogie Preprocessor took 247.04ms. Allocated memory is still 295.7MB. Free memory was 220.0MB in the beginning and 161.8MB in the end (delta: 58.2MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-15 19:01:35,497 INFO L158 Benchmark]: RCFGBuilder took 2800.53ms. Allocated memory was 295.7MB in the beginning and 436.2MB in the end (delta: 140.5MB). Free memory was 161.3MB in the beginning and 305.3MB in the end (delta: -144.0MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. [2023-12-15 19:01:35,497 INFO L158 Benchmark]: TraceAbstraction took 48014.88ms. Allocated memory was 436.2MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 304.2MB in the beginning and 605.9MB in the end (delta: -301.6MB). Peak memory consumption was 871.7MB. Max. memory is 8.0GB. [2023-12-15 19:01:35,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 198.2MB. Free memory was 146.9MB in the beginning and 146.7MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 859.91ms. Allocated memory is still 295.7MB. Free memory was 238.7MB in the beginning and 159.0MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 223.11ms. Allocated memory is still 295.7MB. Free memory was 159.0MB in the beginning and 220.0MB in the end (delta: -61.0MB). Peak memory consumption was 15.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 247.04ms. Allocated memory is still 295.7MB. Free memory was 220.0MB in the beginning and 161.8MB in the end (delta: 58.2MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * RCFGBuilder took 2800.53ms. Allocated memory was 295.7MB in the beginning and 436.2MB in the end (delta: 140.5MB). Free memory was 161.3MB in the beginning and 305.3MB in the end (delta: -144.0MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. * TraceAbstraction took 48014.88ms. Allocated memory was 436.2MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 304.2MB in the beginning and 605.9MB in the end (delta: -301.6MB). Peak memory consumption was 871.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 161). Cancelled while NwaCegarLoop was constructing difference of abstraction (15650states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1321 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.0s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 28.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5805 SdHoareTripleChecker+Valid, 26.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5805 mSDsluCounter, 7170 SdHoareTripleChecker+Invalid, 22.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 663 mSDsCounter, 3565 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18346 IncrementalHoareTripleChecker+Invalid, 21911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3565 mSolverCounterUnsat, 6507 mSDtfsCounter, 18346 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3672 GetRequests, 3633 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27684occurred in iteration=17, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 31534 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 12128 NumberOfCodeBlocks, 12128 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 12875 ConstructedInterpolants, 0 QuantifiedInterpolants, 51183 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3424 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 13381/13986 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown