/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:57:07,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:57:07,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:57:07,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:57:07,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:57:07,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:57:07,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:57:07,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:57:07,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:57:07,489 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:57:07,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:57:07,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:57:07,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:57:07,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:57:07,492 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:57:07,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:57:07,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:57:07,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:57:07,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:57:07,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:57:07,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:57:07,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:57:07,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:57:07,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:57:07,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:57:07,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:57:07,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:57:07,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:57:07,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:57:07,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:57:07,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:57:07,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:57:07,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:57:07,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:57:07,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:57:07,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:57:07,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:57:07,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:57:07,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:57:07,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:57:07,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:57:07,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:57:07,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:57:07,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:57:07,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:57:07,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:57:07,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:57:07,773 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:57:07,774 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:57:07,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2023-12-16 01:57:09,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:57:09,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:57:09,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2023-12-16 01:57:09,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428b19ede/5e63301715fe4adcb7adac6300a4f759/FLAGc3dda4cb8 [2023-12-16 01:57:09,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428b19ede/5e63301715fe4adcb7adac6300a4f759 [2023-12-16 01:57:09,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:57:09,563 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:57:09,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:57:09,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:57:09,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:57:09,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:57:09" (1/1) ... [2023-12-16 01:57:09,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49581084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:09, skipping insertion in model container [2023-12-16 01:57:09,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:57:09" (1/1) ... [2023-12-16 01:57:09,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:57:09,962 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/Problem13_label05.c[6050,6063] [2023-12-16 01:57:10,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:57:10,750 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:57:10,776 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/Problem13_label05.c[6050,6063] [2023-12-16 01:57:11,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:57:11,246 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:57:11,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11 WrapperNode [2023-12-16 01:57:11,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:57:11,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:57:11,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:57:11,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:57:11,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:11,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:11,764 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-16 01:57:11,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:57:11,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:57:11,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:57:11,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:57:11,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:11,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:11,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,171 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]. [2023-12-16 01:57:12,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,378 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:57:12,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:57:12,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:57:12,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:57:12,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (1/1) ... [2023-12-16 01:57:12,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:57:12,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:57:12,577 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) [2023-12-16 01:57:12,600 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 [2023-12-16 01:57:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:57:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:57:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:57:12,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:57:12,669 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:57:12,670 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:57:17,607 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:57:17,659 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:57:17,660 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:57:17,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:57:17 BoogieIcfgContainer [2023-12-16 01:57:17,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:57:17,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:57:17,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:57:17,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:57:17,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:57:09" (1/3) ... [2023-12-16 01:57:17,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b47f297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:57:17, skipping insertion in model container [2023-12-16 01:57:17,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:57:11" (2/3) ... [2023-12-16 01:57:17,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b47f297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:57:17, skipping insertion in model container [2023-12-16 01:57:17,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:57:17" (3/3) ... [2023-12-16 01:57:17,667 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05.c [2023-12-16 01:57:17,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:57:17,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:57:17,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:57:17,752 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;@afe5b5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:57:17,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:57:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 01:57:17,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:17,768 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] [2023-12-16 01:57:17,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:17,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:17,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1737928220, now seen corresponding path program 1 times [2023-12-16 01:57:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818221545] [2023-12-16 01:57:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818221545] [2023-12-16 01:57:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818221545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:17,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473202937] [2023-12-16 01:57:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:57:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:57:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:57:17,982 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:18,074 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-16 01:57:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:57:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-16 01:57:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:18,102 INFO L225 Difference]: With dead ends: 2071 [2023-12-16 01:57:18,103 INFO L226 Difference]: Without dead ends: 1034 [2023-12-16 01:57:18,111 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 [2023-12-16 01:57:18,115 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 [2023-12-16 01:57:18,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:57:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-16 01:57:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-16 01:57:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-16 01:57:18,203 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 41 [2023-12-16 01:57:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:18,203 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-16 01:57:18,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-16 01:57:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 01:57:18,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:18,204 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] [2023-12-16 01:57:18,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:57:18,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:18,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash 956339171, now seen corresponding path program 1 times [2023-12-16 01:57:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53901076] [2023-12-16 01:57:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:18,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53901076] [2023-12-16 01:57:18,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53901076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:18,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:18,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:18,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822013668] [2023-12-16 01:57:18,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:18,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:18,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:18,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:18,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:18,372 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:22,321 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2023-12-16 01:57:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-16 01:57:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:22,330 INFO L225 Difference]: With dead ends: 2931 [2023-12-16 01:57:22,331 INFO L226 Difference]: Without dead ends: 1898 [2023-12-16 01:57:22,333 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 [2023-12-16 01:57:22,334 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 973 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:22,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 01:57:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-16 01:57:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-16 01:57:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-16 01:57:22,380 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 41 [2023-12-16 01:57:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:22,380 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-16 01:57:22,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-16 01:57:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 01:57:22,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:22,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:57:22,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:57:22,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:22,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash 958336121, now seen corresponding path program 1 times [2023-12-16 01:57:22,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320918682] [2023-12-16 01:57:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:22,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:22,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320918682] [2023-12-16 01:57:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320918682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986721160] [2023-12-16 01:57:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:22,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:22,670 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:26,194 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-16 01:57:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:26,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-16 01:57:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:26,209 INFO L225 Difference]: With dead ends: 5383 [2023-12-16 01:57:26,210 INFO L226 Difference]: Without dead ends: 3491 [2023-12-16 01:57:26,214 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 [2023-12-16 01:57:26,215 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:26,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 01:57:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-16 01:57:26,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-16 01:57:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-16 01:57:26,287 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 106 [2023-12-16 01:57:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:26,293 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-16 01:57:26,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-16 01:57:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 01:57:26,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:26,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:57:26,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:57:26,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:26,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash 703997812, now seen corresponding path program 1 times [2023-12-16 01:57:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566535801] [2023-12-16 01:57:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:26,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566535801] [2023-12-16 01:57:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566535801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:26,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:26,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:26,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383889333] [2023-12-16 01:57:26,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:26,456 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:29,801 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-16 01:57:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:29,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-16 01:57:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:29,826 INFO L225 Difference]: With dead ends: 10168 [2023-12-16 01:57:29,827 INFO L226 Difference]: Without dead ends: 6679 [2023-12-16 01:57:29,835 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 [2023-12-16 01:57:29,844 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:29,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 01:57:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-16 01:57:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-16 01:57:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-16 01:57:29,989 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 108 [2023-12-16 01:57:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:29,991 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-16 01:57:29,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-16 01:57:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 01:57:30,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:30,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:57:30,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:57:30,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:30,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 116180774, now seen corresponding path program 1 times [2023-12-16 01:57:30,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777869271] [2023-12-16 01:57:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777869271] [2023-12-16 01:57:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777869271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:30,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493816206] [2023-12-16 01:57:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:30,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:30,446 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:33,296 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2023-12-16 01:57:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:33,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-16 01:57:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:33,318 INFO L225 Difference]: With dead ends: 14122 [2023-12-16 01:57:33,318 INFO L226 Difference]: Without dead ends: 7455 [2023-12-16 01:57:33,329 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 [2023-12-16 01:57:33,330 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:33,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:57:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2023-12-16 01:57:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2023-12-16 01:57:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2023-12-16 01:57:33,475 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 152 [2023-12-16 01:57:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:33,476 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2023-12-16 01:57:33,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2023-12-16 01:57:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 01:57:33,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:33,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:57:33,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:57:33,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:33,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:33,479 INFO L85 PathProgramCache]: Analyzing trace with hash 535010620, now seen corresponding path program 1 times [2023-12-16 01:57:33,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:33,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55286865] [2023-12-16 01:57:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:33,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-16 01:57:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55286865] [2023-12-16 01:57:33,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55286865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:33,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:33,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:33,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450459314] [2023-12-16 01:57:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:33,615 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:37,030 INFO L93 Difference]: Finished difference Result 19655 states and 26990 transitions. [2023-12-16 01:57:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 166 [2023-12-16 01:57:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:37,071 INFO L225 Difference]: With dead ends: 19655 [2023-12-16 01:57:37,072 INFO L226 Difference]: Without dead ends: 12988 [2023-12-16 01:57:37,082 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 [2023-12-16 01:57:37,083 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:37,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1220 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 01:57:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2023-12-16 01:57:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 12971. [2023-12-16 01:57:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.235929067077872) internal successors, (16030), 12970 states have internal predecessors, (16030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16030 transitions. [2023-12-16 01:57:37,303 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16030 transitions. Word has length 166 [2023-12-16 01:57:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:37,303 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16030 transitions. [2023-12-16 01:57:37,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16030 transitions. [2023-12-16 01:57:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-16 01:57:37,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:37,308 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:57:37,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:57:37,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:37,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash -994331320, now seen corresponding path program 1 times [2023-12-16 01:57:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:37,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189837684] [2023-12-16 01:57:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:37,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 01:57:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189837684] [2023-12-16 01:57:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189837684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:37,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:37,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:57:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249344476] [2023-12-16 01:57:37,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:37,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:37,648 INFO L87 Difference]: Start difference. First operand 12971 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:40,551 INFO L93 Difference]: Finished difference Result 22791 states and 28650 transitions. [2023-12-16 01:57:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:40,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 253 [2023-12-16 01:57:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:40,665 INFO L225 Difference]: With dead ends: 22791 [2023-12-16 01:57:40,665 INFO L226 Difference]: Without dead ends: 12979 [2023-12-16 01:57:40,671 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 [2023-12-16 01:57:40,672 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:40,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 01:57:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2023-12-16 01:57:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 12971. [2023-12-16 01:57:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.2347725520431765) internal successors, (16015), 12970 states have internal predecessors, (16015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16015 transitions. [2023-12-16 01:57:40,824 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16015 transitions. Word has length 253 [2023-12-16 01:57:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:40,824 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16015 transitions. [2023-12-16 01:57:40,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16015 transitions. [2023-12-16 01:57:40,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-16 01:57:40,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:40,828 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:57:40,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:57:40,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:40,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 404091780, now seen corresponding path program 1 times [2023-12-16 01:57:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312230776] [2023-12-16 01:57:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312230776] [2023-12-16 01:57:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312230776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:40,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:40,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:57:40,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040616225] [2023-12-16 01:57:40,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:40,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:40,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:40,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:40,985 INFO L87 Difference]: Start difference. First operand 12971 states and 16015 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:44,344 INFO L93 Difference]: Finished difference Result 36165 states and 45133 transitions. [2023-12-16 01:57:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:44,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2023-12-16 01:57:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:44,386 INFO L225 Difference]: With dead ends: 36165 [2023-12-16 01:57:44,386 INFO L226 Difference]: Without dead ends: 23195 [2023-12-16 01:57:44,403 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 [2023-12-16 01:57:44,404 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 842 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:44,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1985 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 01:57:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23195 states. [2023-12-16 01:57:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23195 to 23190. [2023-12-16 01:57:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 23189 states have (on average 1.1870283323989823) internal successors, (27526), 23189 states have internal predecessors, (27526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 27526 transitions. [2023-12-16 01:57:44,689 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 27526 transitions. Word has length 255 [2023-12-16 01:57:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:44,690 INFO L495 AbstractCegarLoop]: Abstraction has 23190 states and 27526 transitions. [2023-12-16 01:57:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 27526 transitions. [2023-12-16 01:57:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 01:57:44,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:44,694 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:57:44,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:57:44,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:44,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -39862253, now seen corresponding path program 1 times [2023-12-16 01:57:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442830014] [2023-12-16 01:57:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 01:57:44,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:44,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442830014] [2023-12-16 01:57:44,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442830014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:44,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:44,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:57:44,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624941412] [2023-12-16 01:57:44,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:44,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:44,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:44,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:44,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:44,872 INFO L87 Difference]: Start difference. First operand 23190 states and 27526 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:48,250 INFO L93 Difference]: Finished difference Result 56619 states and 68543 transitions. [2023-12-16 01:57:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 277 [2023-12-16 01:57:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:48,300 INFO L225 Difference]: With dead ends: 56619 [2023-12-16 01:57:48,300 INFO L226 Difference]: Without dead ends: 34217 [2023-12-16 01:57:48,326 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 [2023-12-16 01:57:48,327 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 883 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:48,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 924 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 01:57:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34217 states. [2023-12-16 01:57:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34217 to 33421. [2023-12-16 01:57:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33421 states, 33420 states have (on average 1.1724715739078395) internal successors, (39184), 33420 states have internal predecessors, (39184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33421 states to 33421 states and 39184 transitions. [2023-12-16 01:57:48,700 INFO L78 Accepts]: Start accepts. Automaton has 33421 states and 39184 transitions. Word has length 277 [2023-12-16 01:57:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:48,700 INFO L495 AbstractCegarLoop]: Abstraction has 33421 states and 39184 transitions. [2023-12-16 01:57:48,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 33421 states and 39184 transitions. [2023-12-16 01:57:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-16 01:57:48,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:48,704 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:57:48,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:57:48,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:48,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash -18975104, now seen corresponding path program 1 times [2023-12-16 01:57:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:48,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9728118] [2023-12-16 01:57:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:48,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 79 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:57:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:50,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9728118] [2023-12-16 01:57:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9728118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:57:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504354924] [2023-12-16 01:57:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:50,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:57:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:57:50,262 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) [2023-12-16 01:57:50,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:57:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:50,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:57:50,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:57:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 01:57:50,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:57:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504354924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:57:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 01:57:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567077308] [2023-12-16 01:57:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:57:50,552 INFO L87 Difference]: Start difference. First operand 33421 states and 39184 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:53,413 INFO L93 Difference]: Finished difference Result 66052 states and 77574 transitions. [2023-12-16 01:57:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:53,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 282 [2023-12-16 01:57:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:53,457 INFO L225 Difference]: With dead ends: 66052 [2023-12-16 01:57:53,457 INFO L226 Difference]: Without dead ends: 33419 [2023-12-16 01:57:53,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:57:53,485 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1165 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:53,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1438 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:57:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33419 states. [2023-12-16 01:57:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33419 to 33418. [2023-12-16 01:57:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33418 states, 33417 states have (on average 1.1338540263937518) internal successors, (37890), 33417 states have internal predecessors, (37890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33418 states to 33418 states and 37890 transitions. [2023-12-16 01:57:53,949 INFO L78 Accepts]: Start accepts. Automaton has 33418 states and 37890 transitions. Word has length 282 [2023-12-16 01:57:53,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:53,950 INFO L495 AbstractCegarLoop]: Abstraction has 33418 states and 37890 transitions. [2023-12-16 01:57:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:53,950 INFO L276 IsEmpty]: Start isEmpty. Operand 33418 states and 37890 transitions. [2023-12-16 01:57:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-16 01:57:53,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:53,957 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:57:53,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:57:54,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 01:57:54,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:54,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1753457091, now seen corresponding path program 1 times [2023-12-16 01:57:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214510833] [2023-12-16 01:57:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 01:57:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214510833] [2023-12-16 01:57:54,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214510833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:57:54,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:57:54,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:57:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982459243] [2023-12-16 01:57:54,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:57:54,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:57:54,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:57:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:57:54,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:57:54,531 INFO L87 Difference]: Start difference. First operand 33418 states and 37890 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:57,982 INFO L93 Difference]: Finished difference Result 77861 states and 89420 transitions. [2023-12-16 01:57:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-12-16 01:57:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:58,028 INFO L225 Difference]: With dead ends: 77861 [2023-12-16 01:57:58,028 INFO L226 Difference]: Without dead ends: 45231 [2023-12-16 01:57:58,046 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 [2023-12-16 01:57:58,048 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 821 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:58,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1942 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 01:57:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45231 states. [2023-12-16 01:57:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45231 to 44440. [2023-12-16 01:57:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44440 states, 44439 states have (on average 1.1160242129660884) internal successors, (49595), 44439 states have internal predecessors, (49595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44440 states to 44440 states and 49595 transitions. [2023-12-16 01:57:58,516 INFO L78 Accepts]: Start accepts. Automaton has 44440 states and 49595 transitions. Word has length 332 [2023-12-16 01:57:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:58,517 INFO L495 AbstractCegarLoop]: Abstraction has 44440 states and 49595 transitions. [2023-12-16 01:57:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 44440 states and 49595 transitions. [2023-12-16 01:57:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-16 01:57:58,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:58,525 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:57:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:57:58,525 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:58,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:58,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1405885060, now seen corresponding path program 1 times [2023-12-16 01:57:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:58,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902599446] [2023-12-16 01:57:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:58,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:57:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 208 proven. 113 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 01:57:59,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:57:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902599446] [2023-12-16 01:57:59,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902599446] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:57:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335612688] [2023-12-16 01:57:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:59,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:57:59,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:57:59,921 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) [2023-12-16 01:57:59,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:58:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:58:00,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:58:00,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:58:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 01:58:00,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:58:00,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335612688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:58:00,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:58:00,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 01:58:00,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310579936] [2023-12-16 01:58:00,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:58:00,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:58:00,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:58:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:58:00,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:58:00,165 INFO L87 Difference]: Start difference. First operand 44440 states and 49595 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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... [2023-12-16 01:58:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:58:01,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:58:01,943 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 785 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:58:01,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 353 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 01:58:01,944 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:58:01,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:58:01,990 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:58:01,990 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 [2023-12-16 01:58:02,145 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,SelfDestructingSolverStorable11 [2023-12-16 01:58:02,146 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (44440states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (29945 states constructed, input type IntersectNwa). [2023-12-16 01:58:02,149 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:58:02,150 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:58:02,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:58:02 BoogieIcfgContainer [2023-12-16 01:58:02,152 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:58:02,152 INFO L158 Benchmark]: Toolchain (without parser) took 52589.81ms. Allocated memory was 282.1MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 215.7MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 815.0MB. Max. memory is 8.0GB. [2023-12-16 01:58:02,152 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 190.8MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:58:02,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1681.37ms. Allocated memory is still 282.1MB. Free memory was 215.3MB in the beginning and 166.0MB in the end (delta: 49.2MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. [2023-12-16 01:58:02,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 515.59ms. Allocated memory is still 282.1MB. Free memory was 166.0MB in the beginning and 125.6MB in the end (delta: 40.4MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2023-12-16 01:58:02,153 INFO L158 Benchmark]: Boogie Preprocessor took 778.21ms. Allocated memory was 282.1MB in the beginning and 479.2MB in the end (delta: 197.1MB). Free memory was 125.6MB in the beginning and 297.6MB in the end (delta: -172.0MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-16 01:58:02,153 INFO L158 Benchmark]: RCFGBuilder took 5116.03ms. Allocated memory was 479.2MB in the beginning and 945.8MB in the end (delta: 466.6MB). Free memory was 297.6MB in the beginning and 743.6MB in the end (delta: -445.9MB). Peak memory consumption was 563.9MB. Max. memory is 8.0GB. [2023-12-16 01:58:02,154 INFO L158 Benchmark]: TraceAbstraction took 44489.98ms. Allocated memory was 945.8MB in the beginning and 2.0GB in the end (delta: 1.0GB). Free memory was 742.5MB in the beginning and 1.4GB in the end (delta: -660.8MB). Peak memory consumption was 677.7MB. Max. memory is 8.0GB. [2023-12-16 01:58:02,155 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 190.8MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1681.37ms. Allocated memory is still 282.1MB. Free memory was 215.3MB in the beginning and 166.0MB in the end (delta: 49.2MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 515.59ms. Allocated memory is still 282.1MB. Free memory was 166.0MB in the beginning and 125.6MB in the end (delta: 40.4MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 778.21ms. Allocated memory was 282.1MB in the beginning and 479.2MB in the end (delta: 197.1MB). Free memory was 125.6MB in the beginning and 297.6MB in the end (delta: -172.0MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * RCFGBuilder took 5116.03ms. Allocated memory was 479.2MB in the beginning and 945.8MB in the end (delta: 466.6MB). Free memory was 297.6MB in the beginning and 743.6MB in the end (delta: -445.9MB). Peak memory consumption was 563.9MB. Max. memory is 8.0GB. * TraceAbstraction took 44489.98ms. Allocated memory was 945.8MB in the beginning and 2.0GB in the end (delta: 1.0GB). Free memory was 742.5MB in the beginning and 1.4GB in the end (delta: -660.8MB). Peak memory consumption was 677.7MB. 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: 148]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 148). Cancelled while NwaCegarLoop was constructing difference of abstraction (44440states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (29945 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.4s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9511 SdHoareTripleChecker+Valid, 33.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9511 mSDsluCounter, 14610 SdHoareTripleChecker+Invalid, 27.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1449 mSDsCounter, 6165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27009 IncrementalHoareTripleChecker+Invalid, 33174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6165 mSolverCounterUnsat, 13161 mSDtfsCounter, 27009 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 664 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44440occurred in iteration=11, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1635 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 2989 NumberOfCodeBlocks, 2989 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2975 ConstructedInterpolants, 0 QuantifiedInterpolants, 13099 SizeOfPredicates, 0 NumberOfNonLiveVariables, 877 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 1904/2130 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