/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:08:14,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:08:14,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:08:14,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:08:14,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:08:14,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:08:14,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:08:14,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:08:14,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:08:14,225 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:08:14,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:08:14,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:08:14,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:08:14,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:08:14,227 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:08:14,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:08:14,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:08:14,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:08:14,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:08:14,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:08:14,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:08:14,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:08:14,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:08:14,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:08:14,230 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:08:14,230 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:08:14,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:08:14,231 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:08:14,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:08:14,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:08:14,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:08:14,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:08:14,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:08:14,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:08:14,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:08:14,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:08:14,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:08:14,234 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:08:14,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:08:14,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:08:14,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:08:14,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:08:14,453 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:08:14,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:08:15,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:08:15,807 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:08:15,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:08:15,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9889225a3/5d1da5d9555e40d99487626386df1c52/FLAGb9e6d1f6f [2023-12-20 01:08:15,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9889225a3/5d1da5d9555e40d99487626386df1c52 [2023-12-20 01:08:15,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:08:15,838 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:08:15,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:08:15,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:08:15,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:08:15,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:08:15" (1/1) ... [2023-12-20 01:08:15,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3cb2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:15, skipping insertion in model container [2023-12-20 01:08:15,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:08:15" (1/1) ... [2023-12-20 01:08:15,884 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:08:16,035 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c[8342,8355] [2023-12-20 01:08:16,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:08:16,045 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:08:16,075 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c[8342,8355] [2023-12-20 01:08:16,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:08:16,087 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:08:16,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16 WrapperNode [2023-12-20 01:08:16,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:08:16,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:08:16,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:08:16,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:08:16,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,135 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 275 [2023-12-20 01:08:16,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:08:16,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:08:16,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:08:16,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:08:16,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,169 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]. [2023-12-20 01:08:16,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:08:16,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:08:16,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:08:16,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:08:16,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (1/1) ... [2023-12-20 01:08:16,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:08:16,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:16,233 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) [2023-12-20 01:08:16,258 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 [2023-12-20 01:08:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:08:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:08:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:08:16,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:08:16,358 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:08:16,359 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:08:16,708 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:08:16,742 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:08:16,743 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:08:16,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:08:16 BoogieIcfgContainer [2023-12-20 01:08:16,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:08:16,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:08:16,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:08:16,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:08:16,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:08:15" (1/3) ... [2023-12-20 01:08:16,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ee037c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:08:16, skipping insertion in model container [2023-12-20 01:08:16,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:08:16" (2/3) ... [2023-12-20 01:08:16,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ee037c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:08:16, skipping insertion in model container [2023-12-20 01:08:16,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:08:16" (3/3) ... [2023-12-20 01:08:16,750 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:08:16,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:08:16,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:08:16,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:08:16,810 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;@4090cabd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:08:16,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:08:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.78125) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-20 01:08:16,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:16,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:16,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:16,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash -477272920, now seen corresponding path program 1 times [2023-12-20 01:08:16,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:16,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165672500] [2023-12-20 01:08:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:16,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:17,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165672500] [2023-12-20 01:08:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165672500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:08:17,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316007288] [2023-12-20 01:08:17,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:17,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:08:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:08:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:08:17,041 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.78125) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:17,067 INFO L93 Difference]: Finished difference Result 104 states and 177 transitions. [2023-12-20 01:08:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:08:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-20 01:08:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:17,074 INFO L225 Difference]: With dead ends: 104 [2023-12-20 01:08:17,074 INFO L226 Difference]: Without dead ends: 64 [2023-12-20 01:08:17,076 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 [2023-12-20 01:08:17,080 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:17,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-20 01:08:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-20 01:08:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.7301587301587302) internal successors, (109), 63 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 109 transitions. [2023-12-20 01:08:17,116 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 109 transitions. Word has length 18 [2023-12-20 01:08:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:17,116 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 109 transitions. [2023-12-20 01:08:17,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 109 transitions. [2023-12-20 01:08:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-20 01:08:17,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:17,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:08:17,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:17,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1757136598, now seen corresponding path program 1 times [2023-12-20 01:08:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:17,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263616862] [2023-12-20 01:08:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:17,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:17,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263616862] [2023-12-20 01:08:17,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263616862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:17,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:17,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:08:17,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37573301] [2023-12-20 01:08:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:17,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:08:17,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:08:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:08:17,240 INFO L87 Difference]: Start difference. First operand 64 states and 109 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:17,322 INFO L93 Difference]: Finished difference Result 104 states and 171 transitions. [2023-12-20 01:08:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:08:17,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-20 01:08:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:17,323 INFO L225 Difference]: With dead ends: 104 [2023-12-20 01:08:17,323 INFO L226 Difference]: Without dead ends: 64 [2023-12-20 01:08:17,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:08:17,324 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:17,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 292 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-20 01:08:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-20 01:08:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 63 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-12-20 01:08:17,329 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 18 [2023-12-20 01:08:17,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:17,329 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-12-20 01:08:17,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,329 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-12-20 01:08:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 01:08:17,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:17,330 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] [2023-12-20 01:08:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:08:17,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:17,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 890721989, now seen corresponding path program 1 times [2023-12-20 01:08:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:17,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468657521] [2023-12-20 01:08:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:17,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468657521] [2023-12-20 01:08:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468657521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:17,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:17,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766094121] [2023-12-20 01:08:17,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:17,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:17,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:17,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:17,471 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:17,649 INFO L93 Difference]: Finished difference Result 360 states and 558 transitions. [2023-12-20 01:08:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 01:08:17,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 01:08:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:17,655 INFO L225 Difference]: With dead ends: 360 [2023-12-20 01:08:17,655 INFO L226 Difference]: Without dead ends: 323 [2023-12-20 01:08:17,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:08:17,656 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 563 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:17,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 630 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:08:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-20 01:08:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 99. [2023-12-20 01:08:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 98 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2023-12-20 01:08:17,668 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 40 [2023-12-20 01:08:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:17,669 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2023-12-20 01:08:17,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2023-12-20 01:08:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 01:08:17,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:17,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:17,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:08:17,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:17,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 525634581, now seen corresponding path program 1 times [2023-12-20 01:08:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412032015] [2023-12-20 01:08:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:17,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:17,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412032015] [2023-12-20 01:08:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412032015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:17,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422485073] [2023-12-20 01:08:17,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:17,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:17,723 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:17,741 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2023-12-20 01:08:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:17,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 01:08:17,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:17,742 INFO L225 Difference]: With dead ends: 232 [2023-12-20 01:08:17,742 INFO L226 Difference]: Without dead ends: 160 [2023-12-20 01:08:17,742 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 [2023-12-20 01:08:17,743 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 36 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 130 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-20 01:08:17,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2023-12-20 01:08:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4838709677419355) internal successors, (230), 155 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 230 transitions. [2023-12-20 01:08:17,752 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 230 transitions. Word has length 42 [2023-12-20 01:08:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:17,752 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 230 transitions. [2023-12-20 01:08:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 230 transitions. [2023-12-20 01:08:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 01:08:17,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:17,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:17,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:08:17,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:17,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 527779533, now seen corresponding path program 1 times [2023-12-20 01:08:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:17,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636379011] [2023-12-20 01:08:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:17,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636379011] [2023-12-20 01:08:17,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636379011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:17,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:17,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318941816] [2023-12-20 01:08:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:17,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:17,910 INFO L87 Difference]: Start difference. First operand 156 states and 230 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:17,989 INFO L93 Difference]: Finished difference Result 287 states and 434 transitions. [2023-12-20 01:08:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:08:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 01:08:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:17,991 INFO L225 Difference]: With dead ends: 287 [2023-12-20 01:08:17,991 INFO L226 Difference]: Without dead ends: 158 [2023-12-20 01:08:17,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:08:17,996 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 94 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:17,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 239 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-20 01:08:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-12-20 01:08:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4709677419354839) internal successors, (228), 155 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2023-12-20 01:08:18,011 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 42 [2023-12-20 01:08:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,011 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2023-12-20 01:08:18,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2023-12-20 01:08:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 01:08:18,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:08:18,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash -832747470, now seen corresponding path program 1 times [2023-12-20 01:08:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832527032] [2023-12-20 01:08:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:18,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:18,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832527032] [2023-12-20 01:08:18,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832527032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:18,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:18,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:18,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920357243] [2023-12-20 01:08:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:18,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:18,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:18,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:18,232 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:18,253 INFO L93 Difference]: Finished difference Result 164 states and 237 transitions. [2023-12-20 01:08:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:08:18,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 01:08:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:18,256 INFO L225 Difference]: With dead ends: 164 [2023-12-20 01:08:18,256 INFO L226 Difference]: Without dead ends: 162 [2023-12-20 01:08:18,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:18,258 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 2 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:18,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 395 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-20 01:08:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2023-12-20 01:08:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.4528301886792452) internal successors, (231), 159 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 231 transitions. [2023-12-20 01:08:18,276 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 231 transitions. Word has length 43 [2023-12-20 01:08:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,277 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 231 transitions. [2023-12-20 01:08:18,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 231 transitions. [2023-12-20 01:08:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 01:08:18,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:18,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:08:18,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1232457331, now seen corresponding path program 1 times [2023-12-20 01:08:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806521524] [2023-12-20 01:08:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:18,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806521524] [2023-12-20 01:08:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806521524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:18,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618450612] [2023-12-20 01:08:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:18,322 INFO L87 Difference]: Start difference. First operand 160 states and 231 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:18,340 INFO L93 Difference]: Finished difference Result 410 states and 611 transitions. [2023-12-20 01:08:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:18,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-20 01:08:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:18,342 INFO L225 Difference]: With dead ends: 410 [2023-12-20 01:08:18,342 INFO L226 Difference]: Without dead ends: 277 [2023-12-20 01:08:18,343 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 [2023-12-20 01:08:18,345 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:18,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-20 01:08:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2023-12-20 01:08:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.467153284671533) internal successors, (402), 274 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 402 transitions. [2023-12-20 01:08:18,354 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 402 transitions. Word has length 44 [2023-12-20 01:08:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,354 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 402 transitions. [2023-12-20 01:08:18,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 402 transitions. [2023-12-20 01:08:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 01:08:18,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:18,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:08:18,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash -969379955, now seen corresponding path program 1 times [2023-12-20 01:08:18,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532887590] [2023-12-20 01:08:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:18,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532887590] [2023-12-20 01:08:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532887590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453992177] [2023-12-20 01:08:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:18,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:18,410 INFO L87 Difference]: Start difference. First operand 275 states and 402 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:18,428 INFO L93 Difference]: Finished difference Result 739 states and 1096 transitions. [2023-12-20 01:08:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-20 01:08:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:18,430 INFO L225 Difference]: With dead ends: 739 [2023-12-20 01:08:18,430 INFO L226 Difference]: Without dead ends: 491 [2023-12-20 01:08:18,431 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 [2023-12-20 01:08:18,432 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 43 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:18,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 177 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-20 01:08:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2023-12-20 01:08:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.459016393442623) internal successors, (712), 488 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 712 transitions. [2023-12-20 01:08:18,450 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 712 transitions. Word has length 44 [2023-12-20 01:08:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,450 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 712 transitions. [2023-12-20 01:08:18,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 712 transitions. [2023-12-20 01:08:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 01:08:18,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:18,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:08:18,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1858113395, now seen corresponding path program 1 times [2023-12-20 01:08:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225993242] [2023-12-20 01:08:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:18,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225993242] [2023-12-20 01:08:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225993242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:18,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:18,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228474629] [2023-12-20 01:08:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:18,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:18,509 INFO L87 Difference]: Start difference. First operand 489 states and 712 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:18,534 INFO L93 Difference]: Finished difference Result 1349 states and 1970 transitions. [2023-12-20 01:08:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-20 01:08:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:18,538 INFO L225 Difference]: With dead ends: 1349 [2023-12-20 01:08:18,538 INFO L226 Difference]: Without dead ends: 887 [2023-12-20 01:08:18,541 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 [2023-12-20 01:08:18,543 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 45 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:18,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 183 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-12-20 01:08:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2023-12-20 01:08:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.4343891402714932) internal successors, (1268), 884 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1268 transitions. [2023-12-20 01:08:18,566 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1268 transitions. Word has length 44 [2023-12-20 01:08:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,566 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1268 transitions. [2023-12-20 01:08:18,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,567 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1268 transitions. [2023-12-20 01:08:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-20 01:08:18,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:18,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:08:18,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2078681774, now seen corresponding path program 1 times [2023-12-20 01:08:18,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831431085] [2023-12-20 01:08:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:18,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831431085] [2023-12-20 01:08:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831431085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:18,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:18,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610253133] [2023-12-20 01:08:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:18,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:18,614 INFO L87 Difference]: Start difference. First operand 885 states and 1268 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:18,643 INFO L93 Difference]: Finished difference Result 1788 states and 2602 transitions. [2023-12-20 01:08:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:18,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-20 01:08:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:18,647 INFO L225 Difference]: With dead ends: 1788 [2023-12-20 01:08:18,647 INFO L226 Difference]: Without dead ends: 1289 [2023-12-20 01:08:18,648 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 [2023-12-20 01:08:18,649 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:18,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-12-20 01:08:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1287. [2023-12-20 01:08:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 1.4292379471228616) internal successors, (1838), 1286 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1838 transitions. [2023-12-20 01:08:18,700 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1838 transitions. Word has length 46 [2023-12-20 01:08:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,700 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1838 transitions. [2023-12-20 01:08:18,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1838 transitions. [2023-12-20 01:08:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:08:18,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,701 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:18,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:08:18,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1699388060, now seen corresponding path program 1 times [2023-12-20 01:08:18,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46973816] [2023-12-20 01:08:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 01:08:18,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46973816] [2023-12-20 01:08:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46973816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462404329] [2023-12-20 01:08:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:18,777 INFO L87 Difference]: Start difference. First operand 1287 states and 1838 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:18,911 INFO L93 Difference]: Finished difference Result 6593 states and 9451 transitions. [2023-12-20 01:08:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:08:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 01:08:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:18,924 INFO L225 Difference]: With dead ends: 6593 [2023-12-20 01:08:18,924 INFO L226 Difference]: Without dead ends: 5335 [2023-12-20 01:08:18,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:08:18,926 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 383 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:18,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 416 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2023-12-20 01:08:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 2543. [2023-12-20 01:08:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2542 states have (on average 1.4248623131392604) internal successors, (3622), 2542 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3622 transitions. [2023-12-20 01:08:19,029 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3622 transitions. Word has length 60 [2023-12-20 01:08:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:19,029 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3622 transitions. [2023-12-20 01:08:19,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3622 transitions. [2023-12-20 01:08:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:08:19,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:19,031 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:08:19,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:19,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1962465436, now seen corresponding path program 1 times [2023-12-20 01:08:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:19,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031390342] [2023-12-20 01:08:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:08:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031390342] [2023-12-20 01:08:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031390342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:19,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:19,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103556795] [2023-12-20 01:08:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:19,126 INFO L87 Difference]: Start difference. First operand 2543 states and 3622 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:19,311 INFO L93 Difference]: Finished difference Result 7849 states and 11235 transitions. [2023-12-20 01:08:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:08:19,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 01:08:19,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:19,326 INFO L225 Difference]: With dead ends: 7849 [2023-12-20 01:08:19,326 INFO L226 Difference]: Without dead ends: 6591 [2023-12-20 01:08:19,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:08:19,331 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 371 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:19,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 422 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2023-12-20 01:08:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 4431. [2023-12-20 01:08:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 4430 states have (on average 1.4171557562076749) internal successors, (6278), 4430 states have internal predecessors, (6278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 6278 transitions. [2023-12-20 01:08:19,455 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 6278 transitions. Word has length 60 [2023-12-20 01:08:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:19,455 INFO L495 AbstractCegarLoop]: Abstraction has 4431 states and 6278 transitions. [2023-12-20 01:08:19,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 6278 transitions. [2023-12-20 01:08:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:08:19,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:19,456 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:08:19,456 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:19,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1073731996, now seen corresponding path program 1 times [2023-12-20 01:08:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:19,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637290821] [2023-12-20 01:08:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:19,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:08:19,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:19,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637290821] [2023-12-20 01:08:19,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637290821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:19,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:19,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140136616] [2023-12-20 01:08:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:19,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:19,566 INFO L87 Difference]: Start difference. First operand 4431 states and 6278 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:19,734 INFO L93 Difference]: Finished difference Result 9105 states and 13019 transitions. [2023-12-20 01:08:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:08:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 01:08:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:19,752 INFO L225 Difference]: With dead ends: 9105 [2023-12-20 01:08:19,752 INFO L226 Difference]: Without dead ends: 7847 [2023-12-20 01:08:19,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:08:19,755 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 343 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:19,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 459 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7847 states. [2023-12-20 01:08:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7847 to 5687. [2023-12-20 01:08:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5686 states have (on average 1.4178684488216673) internal successors, (8062), 5686 states have internal predecessors, (8062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 8062 transitions. [2023-12-20 01:08:19,932 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 8062 transitions. Word has length 60 [2023-12-20 01:08:19,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:19,932 INFO L495 AbstractCegarLoop]: Abstraction has 5687 states and 8062 transitions. [2023-12-20 01:08:19,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 8062 transitions. [2023-12-20 01:08:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:08:19,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:19,933 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:19,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:08:19,933 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:19,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2073807199, now seen corresponding path program 1 times [2023-12-20 01:08:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:19,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381440568] [2023-12-20 01:08:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:19,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:08:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:19,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381440568] [2023-12-20 01:08:19,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381440568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:19,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:19,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:08:19,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116168448] [2023-12-20 01:08:19,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:08:20,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:08:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:08:20,000 INFO L87 Difference]: Start difference. First operand 5687 states and 8062 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:20,193 INFO L93 Difference]: Finished difference Result 9641 states and 13811 transitions. [2023-12-20 01:08:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:08:20,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 62 [2023-12-20 01:08:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:20,210 INFO L225 Difference]: With dead ends: 9641 [2023-12-20 01:08:20,211 INFO L226 Difference]: Without dead ends: 8743 [2023-12-20 01:08:20,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:08:20,214 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 374 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:20,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 478 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:08:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2023-12-20 01:08:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 6583. [2023-12-20 01:08:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6583 states, 6582 states have (on average 1.4217563050744455) internal successors, (9358), 6582 states have internal predecessors, (9358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6583 states to 6583 states and 9358 transitions. [2023-12-20 01:08:20,398 INFO L78 Accepts]: Start accepts. Automaton has 6583 states and 9358 transitions. Word has length 62 [2023-12-20 01:08:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:20,398 INFO L495 AbstractCegarLoop]: Abstraction has 6583 states and 9358 transitions. [2023-12-20 01:08:20,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6583 states and 9358 transitions. [2023-12-20 01:08:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:08:20,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:20,399 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:08:20,400 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:20,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash 266793188, now seen corresponding path program 1 times [2023-12-20 01:08:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298016683] [2023-12-20 01:08:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:20,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:20,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298016683] [2023-12-20 01:08:20,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298016683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:20,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:20,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144709208] [2023-12-20 01:08:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:20,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:20,445 INFO L87 Difference]: Start difference. First operand 6583 states and 9358 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:20,528 INFO L93 Difference]: Finished difference Result 11532 states and 16506 transitions. [2023-12-20 01:08:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-20 01:08:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:20,536 INFO L225 Difference]: With dead ends: 11532 [2023-12-20 01:08:20,536 INFO L226 Difference]: Without dead ends: 4978 [2023-12-20 01:08:20,542 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 [2023-12-20 01:08:20,542 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:20,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 185 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2023-12-20 01:08:20,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4976. [2023-12-20 01:08:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4976 states, 4975 states have (on average 1.4245226130653266) internal successors, (7087), 4975 states have internal predecessors, (7087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 7087 transitions. [2023-12-20 01:08:20,710 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 7087 transitions. Word has length 62 [2023-12-20 01:08:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:20,711 INFO L495 AbstractCegarLoop]: Abstraction has 4976 states and 7087 transitions. [2023-12-20 01:08:20,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 7087 transitions. [2023-12-20 01:08:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:08:20,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:20,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:20,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:08:20,712 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:20,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1163729101, now seen corresponding path program 1 times [2023-12-20 01:08:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576344540] [2023-12-20 01:08:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:20,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:20,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576344540] [2023-12-20 01:08:20,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576344540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:20,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:20,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674938947] [2023-12-20 01:08:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:20,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:20,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:20,775 INFO L87 Difference]: Start difference. First operand 4976 states and 7087 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:20,835 INFO L93 Difference]: Finished difference Result 7444 states and 10609 transitions. [2023-12-20 01:08:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-20 01:08:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:20,839 INFO L225 Difference]: With dead ends: 7444 [2023-12-20 01:08:20,839 INFO L226 Difference]: Without dead ends: 2514 [2023-12-20 01:08:20,843 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 [2023-12-20 01:08:20,844 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:20,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 170 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2023-12-20 01:08:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2512. [2023-12-20 01:08:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2511 states have (on average 1.4030266825965751) internal successors, (3523), 2511 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3523 transitions. [2023-12-20 01:08:20,901 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3523 transitions. Word has length 63 [2023-12-20 01:08:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:20,901 INFO L495 AbstractCegarLoop]: Abstraction has 2512 states and 3523 transitions. [2023-12-20 01:08:20,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3523 transitions. [2023-12-20 01:08:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:08:20,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:20,902 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:08:20,902 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:20,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2020531995, now seen corresponding path program 1 times [2023-12-20 01:08:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446068990] [2023-12-20 01:08:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:20,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:20,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446068990] [2023-12-20 01:08:20,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446068990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:20,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:20,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:20,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289157452] [2023-12-20 01:08:20,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:20,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:20,991 INFO L87 Difference]: Start difference. First operand 2512 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:21,019 INFO L93 Difference]: Finished difference Result 3748 states and 5263 transitions. [2023-12-20 01:08:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-20 01:08:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:21,021 INFO L225 Difference]: With dead ends: 3748 [2023-12-20 01:08:21,021 INFO L226 Difference]: Without dead ends: 1282 [2023-12-20 01:08:21,023 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 [2023-12-20 01:08:21,023 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:21,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 155 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2023-12-20 01:08:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2023-12-20 01:08:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3784206411258797) internal successors, (1763), 1279 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1763 transitions. [2023-12-20 01:08:21,051 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1763 transitions. Word has length 65 [2023-12-20 01:08:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:21,051 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1763 transitions. [2023-12-20 01:08:21,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1763 transitions. [2023-12-20 01:08:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 01:08:21,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:21,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:08:21,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:21,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1020997353, now seen corresponding path program 1 times [2023-12-20 01:08:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991163076] [2023-12-20 01:08:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:21,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991163076] [2023-12-20 01:08:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991163076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:08:21,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:08:21,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:08:21,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50046] [2023-12-20 01:08:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:08:21,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:08:21,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:08:21,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:08:21,099 INFO L87 Difference]: Start difference. First operand 1280 states and 1763 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:21,124 INFO L93 Difference]: Finished difference Result 1900 states and 2623 transitions. [2023-12-20 01:08:21,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:08:21,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 01:08:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:21,125 INFO L225 Difference]: With dead ends: 1900 [2023-12-20 01:08:21,125 INFO L226 Difference]: Without dead ends: 666 [2023-12-20 01:08:21,126 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 [2023-12-20 01:08:21,127 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 31 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:21,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 140 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:08:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-20 01:08:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2023-12-20 01:08:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.3484162895927603) internal successors, (894), 663 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 894 transitions. [2023-12-20 01:08:21,144 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 894 transitions. Word has length 67 [2023-12-20 01:08:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:21,144 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 894 transitions. [2023-12-20 01:08:21,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 894 transitions. [2023-12-20 01:08:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 01:08:21,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:21,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:21,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:08:21,145 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:21,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:21,146 INFO L85 PathProgramCache]: Analyzing trace with hash 261810231, now seen corresponding path program 1 times [2023-12-20 01:08:21,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:21,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548897576] [2023-12-20 01:08:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:21,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:23,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:23,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548897576] [2023-12-20 01:08:23,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548897576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:23,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593824106] [2023-12-20 01:08:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:23,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:23,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:23,078 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) [2023-12-20 01:08:23,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:08:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:23,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:08:23,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:23,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593824106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:23,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 20 [2023-12-20 01:08:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689744315] [2023-12-20 01:08:23,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 01:08:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 01:08:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-20 01:08:23,684 INFO L87 Difference]: Start difference. First operand 664 states and 894 transitions. Second operand has 20 states, 20 states have (on average 9.9) internal successors, (198), 20 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:29,380 INFO L93 Difference]: Finished difference Result 6734 states and 8956 transitions. [2023-12-20 01:08:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-20 01:08:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.9) internal successors, (198), 20 states have internal predecessors, (198), 0 states have call successors, (0), 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 69 [2023-12-20 01:08:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:29,386 INFO L225 Difference]: With dead ends: 6734 [2023-12-20 01:08:29,386 INFO L226 Difference]: Without dead ends: 6042 [2023-12-20 01:08:29,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3343 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1299, Invalid=8207, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 01:08:29,389 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1697 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:29,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 917 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 01:08:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2023-12-20 01:08:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 5270. [2023-12-20 01:08:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5269 states have (on average 1.3184665021825774) internal successors, (6947), 5269 states have internal predecessors, (6947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 6947 transitions. [2023-12-20 01:08:29,569 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 6947 transitions. Word has length 69 [2023-12-20 01:08:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:29,569 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 6947 transitions. [2023-12-20 01:08:29,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.9) internal successors, (198), 20 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 6947 transitions. [2023-12-20 01:08:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 01:08:29,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:29,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:29,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:29,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:29,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:29,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash 418737613, now seen corresponding path program 1 times [2023-12-20 01:08:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848101459] [2023-12-20 01:08:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:29,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:30,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:30,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848101459] [2023-12-20 01:08:30,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848101459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593713600] [2023-12-20 01:08:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:30,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:30,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:30,110 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) [2023-12-20 01:08:30,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:08:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:30,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:08:30,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:30,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593713600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:30,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 01:08:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934588306] [2023-12-20 01:08:30,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:30,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 01:08:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 01:08:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:08:30,934 INFO L87 Difference]: Start difference. First operand 5270 states and 6947 transitions. Second operand has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 22 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:32,662 INFO L93 Difference]: Finished difference Result 18058 states and 23707 transitions. [2023-12-20 01:08:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 01:08:32,663 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 22 states have internal predecessors, (174), 0 states have call successors, (0), 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 70 [2023-12-20 01:08:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:32,678 INFO L225 Difference]: With dead ends: 18058 [2023-12-20 01:08:32,678 INFO L226 Difference]: Without dead ends: 12864 [2023-12-20 01:08:32,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=586, Invalid=2276, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 01:08:32,684 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1790 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:32,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 646 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 01:08:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12864 states. [2023-12-20 01:08:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12864 to 12240. [2023-12-20 01:08:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12240 states, 12239 states have (on average 1.3042732249366777) internal successors, (15963), 12239 states have internal predecessors, (15963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12240 states to 12240 states and 15963 transitions. [2023-12-20 01:08:33,090 INFO L78 Accepts]: Start accepts. Automaton has 12240 states and 15963 transitions. Word has length 70 [2023-12-20 01:08:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:33,090 INFO L495 AbstractCegarLoop]: Abstraction has 12240 states and 15963 transitions. [2023-12-20 01:08:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 22 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 12240 states and 15963 transitions. [2023-12-20 01:08:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 01:08:33,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:33,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:33,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:33,296 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,SelfDestructingSolverStorable19 [2023-12-20 01:08:33,296 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:33,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1779713587, now seen corresponding path program 1 times [2023-12-20 01:08:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518620309] [2023-12-20 01:08:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:33,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518620309] [2023-12-20 01:08:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518620309] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857307153] [2023-12-20 01:08:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:33,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:08:33,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:08:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:33,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:08:33,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:34,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857307153] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:34,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:34,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-20 01:08:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501648103] [2023-12-20 01:08:34,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:34,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:08:34,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:08:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:08:34,839 INFO L87 Difference]: Start difference. First operand 12240 states and 15963 transitions. Second operand has 29 states, 29 states have (on average 6.689655172413793) internal successors, (194), 28 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:37,436 INFO L93 Difference]: Finished difference Result 44685 states and 57869 transitions. [2023-12-20 01:08:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-20 01:08:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.689655172413793) internal successors, (194), 28 states have internal predecessors, (194), 0 states have call successors, (0), 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 70 [2023-12-20 01:08:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:37,483 INFO L225 Difference]: With dead ends: 44685 [2023-12-20 01:08:37,483 INFO L226 Difference]: Without dead ends: 32853 [2023-12-20 01:08:37,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=744, Invalid=3038, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 01:08:37,555 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1224 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:37,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 815 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 01:08:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32853 states. [2023-12-20 01:08:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32853 to 17088. [2023-12-20 01:08:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 17087 states have (on average 1.2824369403640195) internal successors, (21913), 17087 states have internal predecessors, (21913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 21913 transitions. [2023-12-20 01:08:38,301 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 21913 transitions. Word has length 70 [2023-12-20 01:08:38,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:38,301 INFO L495 AbstractCegarLoop]: Abstraction has 17088 states and 21913 transitions. [2023-12-20 01:08:38,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.689655172413793) internal successors, (194), 28 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 21913 transitions. [2023-12-20 01:08:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 01:08:38,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:38,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:38,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:38,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:38,508 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:38,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash -218188067, now seen corresponding path program 1 times [2023-12-20 01:08:38,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:38,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398857924] [2023-12-20 01:08:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:38,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:39,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398857924] [2023-12-20 01:08:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398857924] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141019802] [2023-12-20 01:08:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:39,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:39,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:39,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:08:39,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:08:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:39,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:08:39,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:40,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141019802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:41,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 31 [2023-12-20 01:08:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838669630] [2023-12-20 01:08:41,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:41,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:08:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:08:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:08:41,241 INFO L87 Difference]: Start difference. First operand 17088 states and 21913 transitions. Second operand has 32 states, 32 states have (on average 5.875) internal successors, (188), 31 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:42,485 INFO L93 Difference]: Finished difference Result 23084 states and 29237 transitions. [2023-12-20 01:08:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 01:08:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.875) internal successors, (188), 31 states have internal predecessors, (188), 0 states have call successors, (0), 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 72 [2023-12-20 01:08:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:42,502 INFO L225 Difference]: With dead ends: 23084 [2023-12-20 01:08:42,502 INFO L226 Difference]: Without dead ends: 14609 [2023-12-20 01:08:42,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 01:08:42,510 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 606 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:42,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 942 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:08:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14609 states. [2023-12-20 01:08:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14609 to 12236. [2023-12-20 01:08:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12236 states, 12235 states have (on average 1.281569268492031) internal successors, (15680), 12235 states have internal predecessors, (15680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12236 states to 12236 states and 15680 transitions. [2023-12-20 01:08:43,015 INFO L78 Accepts]: Start accepts. Automaton has 12236 states and 15680 transitions. Word has length 72 [2023-12-20 01:08:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:43,017 INFO L495 AbstractCegarLoop]: Abstraction has 12236 states and 15680 transitions. [2023-12-20 01:08:43,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.875) internal successors, (188), 31 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12236 states and 15680 transitions. [2023-12-20 01:08:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 01:08:43,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:43,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:43,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:43,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:43,223 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1995886685, now seen corresponding path program 1 times [2023-12-20 01:08:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979974560] [2023-12-20 01:08:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:43,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979974560] [2023-12-20 01:08:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979974560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597261470] [2023-12-20 01:08:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:44,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:44,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:44,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:08:44,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 01:08:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:44,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 01:08:44,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:48,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597261470] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:50,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:50,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 17] total 58 [2023-12-20 01:08:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921433755] [2023-12-20 01:08:50,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:50,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 01:08:50,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 01:08:50,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3080, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 01:08:50,064 INFO L87 Difference]: Start difference. First operand 12236 states and 15680 transitions. Second operand has 58 states, 58 states have (on average 3.413793103448276) internal successors, (198), 58 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:32,005 INFO L93 Difference]: Finished difference Result 63096 states and 79939 transitions. [2023-12-20 01:09:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-12-20 01:09:32,005 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.413793103448276) internal successors, (198), 58 states have internal predecessors, (198), 0 states have call successors, (0), 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 72 [2023-12-20 01:09:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:32,065 INFO L225 Difference]: With dead ends: 63096 [2023-12-20 01:09:32,066 INFO L226 Difference]: Without dead ends: 54604 [2023-12-20 01:09:32,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12480 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=6179, Invalid=34827, Unknown=0, NotChecked=0, Total=41006 [2023-12-20 01:09:32,080 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 4436 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 3793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:32,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 2525 Invalid, 3793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3602 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 01:09:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54604 states. [2023-12-20 01:09:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54604 to 20158. [2023-12-20 01:09:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20158 states, 20157 states have (on average 1.2890311058193185) internal successors, (25983), 20157 states have internal predecessors, (25983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20158 states to 20158 states and 25983 transitions. [2023-12-20 01:09:33,293 INFO L78 Accepts]: Start accepts. Automaton has 20158 states and 25983 transitions. Word has length 72 [2023-12-20 01:09:33,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:33,293 INFO L495 AbstractCegarLoop]: Abstraction has 20158 states and 25983 transitions. [2023-12-20 01:09:33,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.413793103448276) internal successors, (198), 58 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20158 states and 25983 transitions. [2023-12-20 01:09:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:09:33,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:33,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:09:33,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 01:09:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-20 01:09:33,500 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:33,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2104026749, now seen corresponding path program 1 times [2023-12-20 01:09:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520247135] [2023-12-20 01:09:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:33,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520247135] [2023-12-20 01:09:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520247135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961831888] [2023-12-20 01:09:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:33,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:33,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:33,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:09:34,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 01:09:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:34,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:09:34,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:34,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:35,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961831888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:35,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:35,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2023-12-20 01:09:35,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299935426] [2023-12-20 01:09:35,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:35,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 01:09:35,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 01:09:35,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2023-12-20 01:09:35,430 INFO L87 Difference]: Start difference. First operand 20158 states and 25983 transitions. Second operand has 31 states, 31 states have (on average 5.32258064516129) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:38,336 INFO L93 Difference]: Finished difference Result 43689 states and 55957 transitions. [2023-12-20 01:09:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-20 01:09:38,336 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.32258064516129) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 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 73 [2023-12-20 01:09:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:38,468 INFO L225 Difference]: With dead ends: 43689 [2023-12-20 01:09:38,468 INFO L226 Difference]: Without dead ends: 38580 [2023-12-20 01:09:38,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=671, Invalid=2751, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 01:09:38,478 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1991 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:38,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 1132 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:09:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38580 states. [2023-12-20 01:09:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38580 to 16501. [2023-12-20 01:09:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16501 states, 16500 states have (on average 1.2874545454545454) internal successors, (21243), 16500 states have internal predecessors, (21243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16501 states to 16501 states and 21243 transitions. [2023-12-20 01:09:39,470 INFO L78 Accepts]: Start accepts. Automaton has 16501 states and 21243 transitions. Word has length 73 [2023-12-20 01:09:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:39,470 INFO L495 AbstractCegarLoop]: Abstraction has 16501 states and 21243 transitions. [2023-12-20 01:09:39,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.32258064516129) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 16501 states and 21243 transitions. [2023-12-20 01:09:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:09:39,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:39,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:09:39,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 01:09:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:39,678 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 157653735, now seen corresponding path program 1 times [2023-12-20 01:09:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105816235] [2023-12-20 01:09:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:40,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105816235] [2023-12-20 01:09:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105816235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016613271] [2023-12-20 01:09:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:40,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:40,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:40,141 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:09:40,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 01:09:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:40,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 01:09:40,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:41,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016613271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:41,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2023-12-20 01:09:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649261994] [2023-12-20 01:09:41,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 01:09:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 01:09:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:09:41,942 INFO L87 Difference]: Start difference. First operand 16501 states and 21243 transitions. Second operand has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 29 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:44,537 INFO L93 Difference]: Finished difference Result 44475 states and 57056 transitions. [2023-12-20 01:09:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 01:09:44,538 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 29 states have internal predecessors, (200), 0 states have call successors, (0), 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 74 [2023-12-20 01:09:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:44,573 INFO L225 Difference]: With dead ends: 44475 [2023-12-20 01:09:44,573 INFO L226 Difference]: Without dead ends: 37662 [2023-12-20 01:09:44,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 01:09:44,581 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 901 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:44,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 662 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:09:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37662 states. [2023-12-20 01:09:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37662 to 24775. [2023-12-20 01:09:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24775 states, 24774 states have (on average 1.2776701380479536) internal successors, (31653), 24774 states have internal predecessors, (31653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24775 states to 24775 states and 31653 transitions. [2023-12-20 01:09:46,255 INFO L78 Accepts]: Start accepts. Automaton has 24775 states and 31653 transitions. Word has length 74 [2023-12-20 01:09:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:46,255 INFO L495 AbstractCegarLoop]: Abstraction has 24775 states and 31653 transitions. [2023-12-20 01:09:46,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 29 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 24775 states and 31653 transitions. [2023-12-20 01:09:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 01:09:46,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:46,258 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:09:46,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 01:09:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:46,464 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1884731880, now seen corresponding path program 1 times [2023-12-20 01:09:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979619133] [2023-12-20 01:09:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:47,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:47,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979619133] [2023-12-20 01:09:47,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979619133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:47,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344146162] [2023-12-20 01:09:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:47,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:47,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:47,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:09:47,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 01:09:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:47,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 01:09:47,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:48,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:09:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344146162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:50,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:50,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 41 [2023-12-20 01:09:50,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472432401] [2023-12-20 01:09:50,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:50,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 01:09:50,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 01:09:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1579, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 01:09:50,496 INFO L87 Difference]: Start difference. First operand 24775 states and 31653 transitions. Second operand has 42 states, 42 states have (on average 7.642857142857143) internal successors, (321), 41 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:03,157 INFO L93 Difference]: Finished difference Result 107909 states and 137216 transitions. [2023-12-20 01:10:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-12-20 01:10:03,158 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.642857142857143) internal successors, (321), 41 states have internal predecessors, (321), 0 states have call successors, (0), 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 117 [2023-12-20 01:10:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:03,243 INFO L225 Difference]: With dead ends: 107909 [2023-12-20 01:10:03,243 INFO L226 Difference]: Without dead ends: 86215 [2023-12-20 01:10:03,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10873 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=4140, Invalid=28802, Unknown=0, NotChecked=0, Total=32942 [2023-12-20 01:10:03,264 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2316 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:03,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 2902 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 01:10:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86215 states. [2023-12-20 01:10:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86215 to 58611. [2023-12-20 01:10:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58611 states, 58610 states have (on average 1.2593072854461695) internal successors, (73808), 58610 states have internal predecessors, (73808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58611 states to 58611 states and 73808 transitions. [2023-12-20 01:10:07,379 INFO L78 Accepts]: Start accepts. Automaton has 58611 states and 73808 transitions. Word has length 117 [2023-12-20 01:10:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:07,379 INFO L495 AbstractCegarLoop]: Abstraction has 58611 states and 73808 transitions. [2023-12-20 01:10:07,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.642857142857143) internal successors, (321), 41 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 58611 states and 73808 transitions. [2023-12-20 01:10:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 01:10:07,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:07,384 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:10:07,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 01:10:07,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 01:10:07,590 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:07,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash 440826136, now seen corresponding path program 1 times [2023-12-20 01:10:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:07,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686364804] [2023-12-20 01:10:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:08,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:08,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686364804] [2023-12-20 01:10:08,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686364804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:08,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001665821] [2023-12-20 01:10:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:08,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:08,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:10:08,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 01:10:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:08,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:10:08,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 45 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:08,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:10,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001665821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:10,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:10,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-12-20 01:10:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525688961] [2023-12-20 01:10:10,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 01:10:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 01:10:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 01:10:10,492 INFO L87 Difference]: Start difference. First operand 58611 states and 73808 transitions. Second operand has 34 states, 34 states have (on average 9.323529411764707) internal successors, (317), 33 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:22,766 INFO L93 Difference]: Finished difference Result 166820 states and 210175 transitions. [2023-12-20 01:10:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-20 01:10:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.323529411764707) internal successors, (317), 33 states have internal predecessors, (317), 0 states have call successors, (0), 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 117 [2023-12-20 01:10:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:22,917 INFO L225 Difference]: With dead ends: 166820 [2023-12-20 01:10:22,917 INFO L226 Difference]: Without dead ends: 118802 [2023-12-20 01:10:22,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3346 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2207, Invalid=11133, Unknown=0, NotChecked=0, Total=13340 [2023-12-20 01:10:22,958 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1883 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:22,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 1810 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:10:23,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118802 states. [2023-12-20 01:10:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118802 to 80327. [2023-12-20 01:10:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80327 states, 80326 states have (on average 1.2333988994846004) internal successors, (99074), 80326 states have internal predecessors, (99074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80327 states to 80327 states and 99074 transitions. [2023-12-20 01:10:29,981 INFO L78 Accepts]: Start accepts. Automaton has 80327 states and 99074 transitions. Word has length 117 [2023-12-20 01:10:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:29,981 INFO L495 AbstractCegarLoop]: Abstraction has 80327 states and 99074 transitions. [2023-12-20 01:10:29,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.323529411764707) internal successors, (317), 33 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 80327 states and 99074 transitions. [2023-12-20 01:10:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 01:10:29,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:29,986 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:10:29,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 01:10:30,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 01:10:30,191 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:30,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash 337265554, now seen corresponding path program 1 times [2023-12-20 01:10:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432296951] [2023-12-20 01:10:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432296951] [2023-12-20 01:10:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432296951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069061925] [2023-12-20 01:10:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:30,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:30,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:10:30,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 01:10:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:30,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:10:30,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 34 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:31,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069061925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:33,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2023-12-20 01:10:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784592418] [2023-12-20 01:10:33,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:33,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:10:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:33,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:10:33,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:10:33,025 INFO L87 Difference]: Start difference. First operand 80327 states and 99074 transitions. Second operand has 32 states, 32 states have (on average 8.9375) internal successors, (286), 31 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:43,717 INFO L93 Difference]: Finished difference Result 191261 states and 236833 transitions. [2023-12-20 01:10:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-20 01:10:43,717 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.9375) internal successors, (286), 31 states have internal predecessors, (286), 0 states have call successors, (0), 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 118 [2023-12-20 01:10:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:43,854 INFO L225 Difference]: With dead ends: 191261 [2023-12-20 01:10:43,854 INFO L226 Difference]: Without dead ends: 123640 [2023-12-20 01:10:43,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2004, Invalid=7116, Unknown=0, NotChecked=0, Total=9120 [2023-12-20 01:10:43,884 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1412 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:43,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1196 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:10:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123640 states. [2023-12-20 01:10:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123640 to 50413. [2023-12-20 01:10:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50413 states, 50412 states have (on average 1.2342696183448385) internal successors, (62222), 50412 states have internal predecessors, (62222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50413 states to 50413 states and 62222 transitions. [2023-12-20 01:10:48,855 INFO L78 Accepts]: Start accepts. Automaton has 50413 states and 62222 transitions. Word has length 118 [2023-12-20 01:10:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:48,856 INFO L495 AbstractCegarLoop]: Abstraction has 50413 states and 62222 transitions. [2023-12-20 01:10:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.9375) internal successors, (286), 31 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 50413 states and 62222 transitions. [2023-12-20 01:10:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 01:10:48,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:48,873 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:10:48,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 01:10:49,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 01:10:49,073 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:49,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1944213400, now seen corresponding path program 1 times [2023-12-20 01:10:49,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:49,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576430584] [2023-12-20 01:10:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:49,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576430584] [2023-12-20 01:10:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576430584] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391496678] [2023-12-20 01:10:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:50,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:50,686 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:10:50,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 01:10:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:50,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 01:10:50,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:52,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391496678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:55,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 19] total 62 [2023-12-20 01:10:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176815453] [2023-12-20 01:10:55,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:55,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 01:10:55,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:55,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 01:10:55,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=3538, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 01:10:55,977 INFO L87 Difference]: Start difference. First operand 50413 states and 62222 transitions. Second operand has 62 states, 62 states have (on average 5.548387096774194) internal successors, (344), 62 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:12:27,498 INFO L93 Difference]: Finished difference Result 161800 states and 198376 transitions. [2023-12-20 01:12:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2023-12-20 01:12:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.548387096774194) internal successors, (344), 62 states have internal predecessors, (344), 0 states have call successors, (0), 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 119 [2023-12-20 01:12:27,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:12:27,679 INFO L225 Difference]: With dead ends: 161800 [2023-12-20 01:12:27,679 INFO L226 Difference]: Without dead ends: 142363 [2023-12-20 01:12:27,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27932 ImplicationChecksByTransitivity, 72.0s TimeCoverageRelationStatistics Valid=11421, Invalid=65585, Unknown=0, NotChecked=0, Total=77006 [2023-12-20 01:12:27,706 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 5407 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 5745 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5407 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 6077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:12:27,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5407 Valid, 4444 Invalid, 6077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 5745 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-20 01:12:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142363 states. [2023-12-20 01:12:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142363 to 59264. [2023-12-20 01:12:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59264 states, 59263 states have (on average 1.2267856841536877) internal successors, (72703), 59263 states have internal predecessors, (72703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59264 states to 59264 states and 72703 transitions. [2023-12-20 01:12:35,562 INFO L78 Accepts]: Start accepts. Automaton has 59264 states and 72703 transitions. Word has length 119 [2023-12-20 01:12:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:12:35,563 INFO L495 AbstractCegarLoop]: Abstraction has 59264 states and 72703 transitions. [2023-12-20 01:12:35,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.548387096774194) internal successors, (344), 62 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 59264 states and 72703 transitions. [2023-12-20 01:12:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 01:12:35,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:12:35,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:12:35,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 01:12:35,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 01:12:35,780 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:12:35,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:12:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1710534316, now seen corresponding path program 1 times [2023-12-20 01:12:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:12:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638812279] [2023-12-20 01:12:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:35,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:12:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:37,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:12:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638812279] [2023-12-20 01:12:37,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638812279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:12:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352932298] [2023-12-20 01:12:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:37,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:12:37,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:12:37,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 01:12:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:37,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-20 01:12:37,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:12:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:40,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:12:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352932298] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:12:49,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:12:49,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 29] total 77 [2023-12-20 01:12:49,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016429270] [2023-12-20 01:12:49,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:12:49,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-20 01:12:49,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:12:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-20 01:12:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=5414, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 01:12:49,706 INFO L87 Difference]: Start difference. First operand 59264 states and 72703 transitions. Second operand has 77 states, 77 states have (on average 4.467532467532467) internal successors, (344), 77 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:16:26,569 INFO L93 Difference]: Finished difference Result 178471 states and 216333 transitions. [2023-12-20 01:16:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 480 states. [2023-12-20 01:16:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.467532467532467) internal successors, (344), 77 states have internal predecessors, (344), 0 states have call successors, (0), 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 119 [2023-12-20 01:16:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:16:26,730 INFO L225 Difference]: With dead ends: 178471 [2023-12-20 01:16:26,730 INFO L226 Difference]: Without dead ends: 158765 [2023-12-20 01:16:26,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 548 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125781 ImplicationChecksByTransitivity, 187.9s TimeCoverageRelationStatistics Valid=24413, Invalid=277537, Unknown=0, NotChecked=0, Total=301950 [2023-12-20 01:16:26,758 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 6620 mSDsluCounter, 8349 mSDsCounter, 0 mSdLazyCounter, 13239 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6620 SdHoareTripleChecker+Valid, 8529 SdHoareTripleChecker+Invalid, 13657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 13239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:16:26,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6620 Valid, 8529 Invalid, 13657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 13239 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2023-12-20 01:16:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158765 states. [2023-12-20 01:16:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158765 to 77513. [2023-12-20 01:16:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77513 states, 77512 states have (on average 1.2298224791000103) internal successors, (95326), 77512 states have internal predecessors, (95326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77513 states to 77513 states and 95326 transitions. [2023-12-20 01:16:38,199 INFO L78 Accepts]: Start accepts. Automaton has 77513 states and 95326 transitions. Word has length 119 [2023-12-20 01:16:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:16:38,199 INFO L495 AbstractCegarLoop]: Abstraction has 77513 states and 95326 transitions. [2023-12-20 01:16:38,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.467532467532467) internal successors, (344), 77 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 77513 states and 95326 transitions. [2023-12-20 01:16:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 01:16:38,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:16:38,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:16:38,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 01:16:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:16:38,407 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:16:38,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:16:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1109588712, now seen corresponding path program 1 times [2023-12-20 01:16:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:16:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636835715] [2023-12-20 01:16:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:16:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:16:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:16:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:39,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:16:39,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636835715] [2023-12-20 01:16:39,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636835715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:16:39,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118911450] [2023-12-20 01:16:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:16:39,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:16:39,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:16:39,160 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:16:39,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 01:16:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:16:39,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 01:16:39,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:16:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:40,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:16:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118911450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:16:44,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:16:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 17] total 52 [2023-12-20 01:16:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17953330] [2023-12-20 01:16:44,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:16:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 01:16:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:16:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 01:16:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=2361, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 01:16:44,020 INFO L87 Difference]: Start difference. First operand 77513 states and 95326 transitions. Second operand has 52 states, 52 states have (on average 6.0) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:17:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:17:31,265 INFO L93 Difference]: Finished difference Result 256428 states and 313591 transitions. [2023-12-20 01:17:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-12-20 01:17:31,266 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.0) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 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 119 [2023-12-20 01:17:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:17:31,532 INFO L225 Difference]: With dead ends: 256428 [2023-12-20 01:17:31,532 INFO L226 Difference]: Without dead ends: 211375 [2023-12-20 01:17:31,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8909 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=5908, Invalid=23848, Unknown=0, NotChecked=0, Total=29756 [2023-12-20 01:17:31,580 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 3459 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:17:31,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 2535 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 01:17:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211375 states. [2023-12-20 01:17:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211375 to 175700. [2023-12-20 01:17:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175700 states, 175699 states have (on average 1.225072424999573) internal successors, (215244), 175699 states have internal predecessors, (215244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:17:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175700 states to 175700 states and 215244 transitions. [2023-12-20 01:17:58,121 INFO L78 Accepts]: Start accepts. Automaton has 175700 states and 215244 transitions. Word has length 119 [2023-12-20 01:17:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:17:58,121 INFO L495 AbstractCegarLoop]: Abstraction has 175700 states and 215244 transitions. [2023-12-20 01:17:58,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.0) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:17:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 175700 states and 215244 transitions. [2023-12-20 01:17:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 01:17:58,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:17:58,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:17:58,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 01:17:58,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-20 01:17:58,351 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:17:58,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:17:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1065550896, now seen corresponding path program 1 times [2023-12-20 01:17:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:17:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762867649] [2023-12-20 01:17:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:17:58,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:17:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:17:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:17:59,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:17:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762867649] [2023-12-20 01:17:59,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762867649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:17:59,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007490659] [2023-12-20 01:17:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:17:59,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:17:59,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:17:59,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:17:59,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 01:17:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:17:59,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 01:17:59,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:18:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:18:01,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:18:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:18:03,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007490659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:18:03,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:18:03,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 52 [2023-12-20 01:18:03,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30522160] [2023-12-20 01:18:03,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:18:03,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 01:18:03,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:18:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 01:18:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2444, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 01:18:03,924 INFO L87 Difference]: Start difference. First operand 175700 states and 215244 transitions. Second operand has 52 states, 52 states have (on average 6.115384615384615) internal successors, (318), 52 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:19:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:19:07,266 INFO L93 Difference]: Finished difference Result 272863 states and 333466 transitions. [2023-12-20 01:19:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-20 01:19:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.115384615384615) internal successors, (318), 52 states have internal predecessors, (318), 0 states have call successors, (0), 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 119 [2023-12-20 01:19:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:19:07,508 INFO L225 Difference]: With dead ends: 272863 [2023-12-20 01:19:07,508 INFO L226 Difference]: Without dead ends: 180016 [2023-12-20 01:19:07,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9437 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=4406, Invalid=27814, Unknown=0, NotChecked=0, Total=32220 [2023-12-20 01:19:07,567 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 2517 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:19:07,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 2549 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 01:19:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180016 states. [2023-12-20 01:19:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180016 to 174136. [2023-12-20 01:19:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174136 states, 174135 states have (on average 1.2223562178769345) internal successors, (212855), 174135 states have internal predecessors, (212855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:19:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174136 states to 174136 states and 212855 transitions. [2023-12-20 01:19:36,079 INFO L78 Accepts]: Start accepts. Automaton has 174136 states and 212855 transitions. Word has length 119 [2023-12-20 01:19:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:19:36,080 INFO L495 AbstractCegarLoop]: Abstraction has 174136 states and 212855 transitions. [2023-12-20 01:19:36,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.115384615384615) internal successors, (318), 52 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:19:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 174136 states and 212855 transitions. [2023-12-20 01:19:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 01:19:36,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:19:36,084 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:19:36,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 01:19:36,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:19:36,289 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:19:36,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:19:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1160354876, now seen corresponding path program 1 times [2023-12-20 01:19:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:19:36,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486419828] [2023-12-20 01:19:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:19:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:19:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:19:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 46 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:19:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:19:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486419828] [2023-12-20 01:19:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486419828] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:19:37,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828054493] [2023-12-20 01:19:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:19:37,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:19:37,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:19:37,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:19:37,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 01:19:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:19:37,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-20 01:19:37,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:19:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:19:40,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:19:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:19:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828054493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:19:45,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:19:45,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 22] total 67 [2023-12-20 01:19:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455304622] [2023-12-20 01:19:45,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:19:45,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 01:19:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:19:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 01:19:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=4292, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 01:19:45,654 INFO L87 Difference]: Start difference. First operand 174136 states and 212855 transitions. Second operand has 68 states, 68 states have (on average 4.764705882352941) internal successors, (324), 67 states have internal predecessors, (324), 0 states have call successors, (0), 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... [2023-12-20 01:22:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-12-20 01:22:13,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 438 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78392 ImplicationChecksByTransitivity, 121.7s TimeCoverageRelationStatistics Valid=22634, Invalid=170526, Unknown=0, NotChecked=0, Total=193160 [2023-12-20 01:22:13,794 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 7421 mSDsluCounter, 6366 mSDsCounter, 0 mSdLazyCounter, 10147 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7421 SdHoareTripleChecker+Valid, 6554 SdHoareTripleChecker+Invalid, 10468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 10147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:22:13,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7421 Valid, 6554 Invalid, 10468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 10147 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-20 01:22:13,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:22:13,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 01:22:13,806 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:22:13,806 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 [2023-12-20 01:22:14,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:14,007 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (174136states) and FLOYD_HOARE automaton (currently 374 states, 68 states before enhancement),while ReachableStatesComputation was computing reachable states (204043 states constructed, input type IntersectNwa). [2023-12-20 01:22:14,011 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:22:14,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:22:14,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:22:14 BoogieIcfgContainer [2023-12-20 01:22:14,015 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:22:14,015 INFO L158 Benchmark]: Toolchain (without parser) took 838177.58ms. Allocated memory was 250.6MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 198.3MB in the beginning and 650.4MB in the end (delta: -452.1MB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-20 01:22:14,015 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 205.5MB. Free memory was 155.9MB in the beginning and 155.7MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:22:14,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.34ms. Allocated memory is still 250.6MB. Free memory was 198.3MB in the beginning and 183.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 01:22:14,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.32ms. Allocated memory is still 250.6MB. Free memory was 183.6MB in the beginning and 181.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:22:14,016 INFO L158 Benchmark]: Boogie Preprocessor took 44.45ms. Allocated memory is still 250.6MB. Free memory was 181.0MB in the beginning and 178.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:22:14,016 INFO L158 Benchmark]: RCFGBuilder took 562.01ms. Allocated memory is still 250.6MB. Free memory was 178.4MB in the beginning and 154.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-20 01:22:14,016 INFO L158 Benchmark]: TraceAbstraction took 837269.83ms. Allocated memory was 250.6MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 153.8MB in the beginning and 650.4MB in the end (delta: -496.6MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-20 01:22:14,017 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 205.5MB. Free memory was 155.9MB in the beginning and 155.7MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.34ms. Allocated memory is still 250.6MB. Free memory was 198.3MB in the beginning and 183.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.32ms. Allocated memory is still 250.6MB. Free memory was 183.6MB in the beginning and 181.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.45ms. Allocated memory is still 250.6MB. Free memory was 181.0MB in the beginning and 178.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 562.01ms. Allocated memory is still 250.6MB. Free memory was 178.4MB in the beginning and 154.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 837269.83ms. Allocated memory was 250.6MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 153.8MB in the beginning and 650.4MB in the end (delta: -496.6MB). Peak memory consumption was 3.6GB. 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: 356]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 356). Cancelled while NwaCegarLoop was constructing difference of abstraction (174136states) and FLOYD_HOARE automaton (currently 374 states, 68 states before enhancement),while ReachableStatesComputation was computing reachable states (204043 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 837.2s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 665.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46171 SdHoareTripleChecker+Valid, 47.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46171 mSDsluCounter, 43098 SdHoareTripleChecker+Invalid, 42.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39558 mSDsCounter, 1967 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50668 IncrementalHoareTripleChecker+Invalid, 52635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1967 mSolverCounterUnsat, 3540 mSDtfsCounter, 50668 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5150 GetRequests, 2538 SyntacticMatches, 3 SemanticMatches, 2609 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285530 ImplicationChecksByTransitivity, 500.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175700occurred in iteration=31, InterpolantAutomatonStates: 1704, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 97.2s AutomataMinimizationTime, 32 MinimizatonAttempts, 443678 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 69.4s InterpolantComputationTime, 3776 NumberOfCodeBlocks, 3776 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 5161 ConstructedInterpolants, 0 QuantifiedInterpolants, 125277 SizeOfPredicates, 137 NumberOfNonLiveVariables, 5699 ConjunctsInSsa, 401 ConjunctsInUnsatCore, 63 InterpolantComputations, 18 PerfectInterpolantSequences, 1009/2735 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