/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:49:27,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:49:27,531 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:49:27,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:49:27,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:49:27,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:49:27,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:49:27,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:49:27,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:49:27,563 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:49:27,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:49:27,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:49:27,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:49:27,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:49:27,565 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:49:27,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:49:27,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:49:27,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:49:27,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:49:27,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:49:27,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:49:27,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:49:27,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:49:27,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:49:27,567 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:49:27,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:49:27,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:49:27,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:49:27,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:49:27,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:49:27,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:49:27,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:49:27,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:49:27,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:49:27,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:49:27,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:49:27,571 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:49:27,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:49:27,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:49:27,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:49:27,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:49:27,806 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:49:27,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2023-12-15 18:49:28,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:49:29,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:49:29,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2023-12-15 18:49:29,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cd274a4/9f43953dacec485ca0fc24b4c7fb88a3/FLAGcaa782e24 [2023-12-15 18:49:29,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cd274a4/9f43953dacec485ca0fc24b4c7fb88a3 [2023-12-15 18:49:29,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:49:29,187 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:49:29,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:49:29,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:49:29,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:49:29,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:49:29" (1/1) ... [2023-12-15 18:49:29,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37829a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:29, skipping insertion in model container [2023-12-15 18:49:29,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:49:29" (1/1) ... [2023-12-15 18:49:29,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:49:29,525 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15.c[6730,6743] [2023-12-15 18:49:30,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:49:30,089 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:49:30,113 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15.c[6730,6743] [2023-12-15 18:49:30,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:49:30,398 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:49:30,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30 WrapperNode [2023-12-15 18:49:30,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:49:30,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:49:30,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:49:30,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:49:30,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,654 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-15 18:49:30,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:49:30,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:49:30,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:49:30,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:49:30,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,847 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:49:30,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:30,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:31,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:31,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:31,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:31,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:49:31,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:49:31,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:49:31,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:49:31,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (1/1) ... [2023-12-15 18:49:31,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:49:31,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:49:31,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:49:31,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:49:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:49:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:49:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:49:31,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:49:31,211 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:49:31,213 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:49:34,117 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:49:34,167 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:49:34,167 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:49:34,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:49:34 BoogieIcfgContainer [2023-12-15 18:49:34,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:49:34,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:49:34,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:49:34,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:49:34,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:49:29" (1/3) ... [2023-12-15 18:49:34,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d13502c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:49:34, skipping insertion in model container [2023-12-15 18:49:34,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:30" (2/3) ... [2023-12-15 18:49:34,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d13502c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:49:34, skipping insertion in model container [2023-12-15 18:49:34,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:49:34" (3/3) ... [2023-12-15 18:49:34,174 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15.c [2023-12-15 18:49:34,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:49:34,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:49:34,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:49:34,242 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;@707ed0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:49:34,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:49:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 18:49:34,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:34,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:34,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:34,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 396474787, now seen corresponding path program 1 times [2023-12-15 18:49:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:34,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742187424] [2023-12-15 18:49:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:34,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:34,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:34,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742187424] [2023-12-15 18:49:34,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742187424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:34,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:34,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:34,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674394177] [2023-12-15 18:49:34,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:49:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:49:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:49:34,424 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 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) [2023-12-15 18:49:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:34,484 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-15 18:49:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:49:34,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-15 18:49:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:34,509 INFO L225 Difference]: With dead ends: 1511 [2023-12-15 18:49:34,509 INFO L226 Difference]: Without dead ends: 754 [2023-12-15 18:49:34,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:49:34,523 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:34,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:49:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-15 18:49:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-15 18:49:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-15 18:49:34,591 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 53 [2023-12-15 18:49:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:34,591 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-15 18:49:34,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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) [2023-12-15 18:49:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-15 18:49:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 18:49:34,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:34,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:34,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:49:34,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:34,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 962943177, now seen corresponding path program 1 times [2023-12-15 18:49:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326234215] [2023-12-15 18:49:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:34,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:34,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326234215] [2023-12-15 18:49:34,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326234215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:34,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120534455] [2023-12-15 18:49:34,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:34,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:34,873 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:39,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:39,582 INFO L93 Difference]: Finished difference Result 3017 states and 5755 transitions. [2023-12-15 18:49:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:49:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-15 18:49:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:39,596 INFO L225 Difference]: With dead ends: 3017 [2023-12-15 18:49:39,596 INFO L226 Difference]: Without dead ends: 2264 [2023-12-15 18:49:39,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:49:39,597 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 2335 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 1596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:39,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 197 Invalid, 5209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1596 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-15 18:49:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2023-12-15 18:49:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2256. [2023-12-15 18:49:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5352549889135254) internal successors, (3462), 2255 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3462 transitions. [2023-12-15 18:49:39,635 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3462 transitions. Word has length 53 [2023-12-15 18:49:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:39,635 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3462 transitions. [2023-12-15 18:49:39,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3462 transitions. [2023-12-15 18:49:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 18:49:39,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:39,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:49:39,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:49:39,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:39,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2074403986, now seen corresponding path program 1 times [2023-12-15 18:49:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623862128] [2023-12-15 18:49:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-15 18:49:40,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623862128] [2023-12-15 18:49:40,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623862128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:40,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:40,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:40,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542255652] [2023-12-15 18:49:40,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:40,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:40,029 INFO L87 Difference]: Start difference. First operand 2256 states and 3462 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:43,490 INFO L93 Difference]: Finished difference Result 6050 states and 9663 transitions. [2023-12-15 18:49:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:49:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 193 [2023-12-15 18:49:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:43,501 INFO L225 Difference]: With dead ends: 6050 [2023-12-15 18:49:43,501 INFO L226 Difference]: Without dead ends: 3758 [2023-12-15 18:49:43,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:43,503 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:43,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-15 18:49:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-12-15 18:49:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2023-12-15 18:49:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.340963534735161) internal successors, (5038), 3757 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5038 transitions. [2023-12-15 18:49:43,546 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5038 transitions. Word has length 193 [2023-12-15 18:49:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:43,547 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5038 transitions. [2023-12-15 18:49:43,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5038 transitions. [2023-12-15 18:49:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-15 18:49:43,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:43,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:43,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:49:43,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:43,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:43,549 INFO L85 PathProgramCache]: Analyzing trace with hash -867901763, now seen corresponding path program 1 times [2023-12-15 18:49:43,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:43,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055446750] [2023-12-15 18:49:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:43,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-15 18:49:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:43,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055446750] [2023-12-15 18:49:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055446750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:43,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:43,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104503525] [2023-12-15 18:49:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:43,719 INFO L87 Difference]: Start difference. First operand 3758 states and 5038 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:46,260 INFO L93 Difference]: Finished difference Result 10519 states and 14355 transitions. [2023-12-15 18:49:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:46,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 263 [2023-12-15 18:49:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:46,278 INFO L225 Difference]: With dead ends: 10519 [2023-12-15 18:49:46,278 INFO L226 Difference]: Without dead ends: 6762 [2023-12-15 18:49:46,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:46,283 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:46,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 484 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:49:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2023-12-15 18:49:46,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6011. [2023-12-15 18:49:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.2815307820299502) internal successors, (7702), 6010 states have internal predecessors, (7702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7702 transitions. [2023-12-15 18:49:46,355 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7702 transitions. Word has length 263 [2023-12-15 18:49:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:46,355 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 7702 transitions. [2023-12-15 18:49:46,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7702 transitions. [2023-12-15 18:49:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-15 18:49:46,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:46,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:46,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:49:46,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -671716134, now seen corresponding path program 1 times [2023-12-15 18:49:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:46,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420768138] [2023-12-15 18:49:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:46,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 103 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 18:49:46,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:46,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420768138] [2023-12-15 18:49:46,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420768138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:49:46,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341412522] [2023-12-15 18:49:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:46,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:49:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:49:46,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:49:46,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:49:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:46,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:49:46,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:49:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:46,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:49:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341412522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:46,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:49:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:49:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784731623] [2023-12-15 18:49:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:46,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:49:46,909 INFO L87 Difference]: Start difference. First operand 6011 states and 7702 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:49,432 INFO L93 Difference]: Finished difference Result 15025 states and 19933 transitions. [2023-12-15 18:49:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-12-15 18:49:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:49,455 INFO L225 Difference]: With dead ends: 15025 [2023-12-15 18:49:49,455 INFO L226 Difference]: Without dead ends: 9015 [2023-12-15 18:49:49,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:49:49,464 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 907 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:49,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 307 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:49:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9015 states. [2023-12-15 18:49:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9015 to 9015. [2023-12-15 18:49:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9014 states have (on average 1.265808741956956) internal successors, (11410), 9014 states have internal predecessors, (11410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 11410 transitions. [2023-12-15 18:49:49,586 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 11410 transitions. Word has length 276 [2023-12-15 18:49:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:49,586 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 11410 transitions. [2023-12-15 18:49:49,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 11410 transitions. [2023-12-15 18:49:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-15 18:49:49,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:49,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:49,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:49:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:49:49,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:49,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:49,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1966034446, now seen corresponding path program 1 times [2023-12-15 18:49:49,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:49,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043198115] [2023-12-15 18:49:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:49,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-15 18:49:49,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043198115] [2023-12-15 18:49:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043198115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:49,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:49,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923668003] [2023-12-15 18:49:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:49,959 INFO L87 Difference]: Start difference. First operand 9015 states and 11410 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:52,677 INFO L93 Difference]: Finished difference Result 25539 states and 32712 transitions. [2023-12-15 18:49:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:52,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 293 [2023-12-15 18:49:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:52,711 INFO L225 Difference]: With dead ends: 25539 [2023-12-15 18:49:52,711 INFO L226 Difference]: Without dead ends: 16525 [2023-12-15 18:49:52,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:52,721 INFO L413 NwaCegarLoop]: 1315 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:52,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1322 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:49:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2023-12-15 18:49:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 15774. [2023-12-15 18:49:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.252393330374691) internal successors, (19754), 15773 states have internal predecessors, (19754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 19754 transitions. [2023-12-15 18:49:52,887 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 19754 transitions. Word has length 293 [2023-12-15 18:49:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:52,888 INFO L495 AbstractCegarLoop]: Abstraction has 15774 states and 19754 transitions. [2023-12-15 18:49:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 19754 transitions. [2023-12-15 18:49:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-15 18:49:52,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:52,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:52,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:49:52,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:52,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1051547492, now seen corresponding path program 1 times [2023-12-15 18:49:52,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:52,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710239610] [2023-12-15 18:49:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:52,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 18:49:53,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:53,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710239610] [2023-12-15 18:49:53,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710239610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:53,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:53,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289366144] [2023-12-15 18:49:53,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:53,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:53,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:53,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:53,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:53,532 INFO L87 Difference]: Start difference. First operand 15774 states and 19754 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:56,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:56,098 INFO L93 Difference]: Finished difference Result 38306 states and 48287 transitions. [2023-12-15 18:49:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 342 [2023-12-15 18:49:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:56,149 INFO L225 Difference]: With dead ends: 38306 [2023-12-15 18:49:56,150 INFO L226 Difference]: Without dead ends: 22533 [2023-12-15 18:49:56,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:56,165 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 828 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:56,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 140 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:49:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2023-12-15 18:49:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2023-12-15 18:49:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.2340671045624) internal successors, (27806), 22532 states have internal predecessors, (27806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 27806 transitions. [2023-12-15 18:49:56,438 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 27806 transitions. Word has length 342 [2023-12-15 18:49:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:56,439 INFO L495 AbstractCegarLoop]: Abstraction has 22533 states and 27806 transitions. [2023-12-15 18:49:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 27806 transitions. [2023-12-15 18:49:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-15 18:49:56,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:56,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:49:56,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:56,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2095581145, now seen corresponding path program 1 times [2023-12-15 18:49:56,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:56,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28190202] [2023-12-15 18:49:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:56,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 18:49:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28190202] [2023-12-15 18:49:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28190202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:56,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278026429] [2023-12-15 18:49:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:56,606 INFO L87 Difference]: Start difference. First operand 22533 states and 27806 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:59,148 INFO L93 Difference]: Finished difference Result 45065 states and 55611 transitions. [2023-12-15 18:49:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 347 [2023-12-15 18:49:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:59,180 INFO L225 Difference]: With dead ends: 45065 [2023-12-15 18:49:59,180 INFO L226 Difference]: Without dead ends: 22533 [2023-12-15 18:49:59,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:59,194 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 736 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:59,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 185 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:49:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2023-12-15 18:49:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2023-12-15 18:49:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.221018995206817) internal successors, (27512), 22532 states have internal predecessors, (27512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 27512 transitions. [2023-12-15 18:49:59,388 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 27512 transitions. Word has length 347 [2023-12-15 18:49:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:59,388 INFO L495 AbstractCegarLoop]: Abstraction has 22533 states and 27512 transitions. [2023-12-15 18:49:59,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 27512 transitions. [2023-12-15 18:49:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-15 18:49:59,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:59,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:59,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:49:59,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:59,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -314837239, now seen corresponding path program 1 times [2023-12-15 18:49:59,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:59,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062971879] [2023-12-15 18:49:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:59,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-15 18:49:59,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062971879] [2023-12-15 18:49:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062971879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:59,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:59,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403480373] [2023-12-15 18:49:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:59,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:59,540 INFO L87 Difference]: Start difference. First operand 22533 states and 27512 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:02,366 INFO L93 Difference]: Finished difference Result 60836 states and 75394 transitions. [2023-12-15 18:50:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:02,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-15 18:50:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:02,411 INFO L225 Difference]: With dead ends: 60836 [2023-12-15 18:50:02,412 INFO L226 Difference]: Without dead ends: 38304 [2023-12-15 18:50:02,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:02,431 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 721 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:02,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 422 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:50:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38304 states. [2023-12-15 18:50:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38304 to 38304. [2023-12-15 18:50:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38304 states, 38303 states have (on average 1.2043704148500118) internal successors, (46131), 38303 states have internal predecessors, (46131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38304 states to 38304 states and 46131 transitions. [2023-12-15 18:50:02,798 INFO L78 Accepts]: Start accepts. Automaton has 38304 states and 46131 transitions. Word has length 358 [2023-12-15 18:50:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:02,799 INFO L495 AbstractCegarLoop]: Abstraction has 38304 states and 46131 transitions. [2023-12-15 18:50:02,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 38304 states and 46131 transitions. [2023-12-15 18:50:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-15 18:50:02,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:02,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:02,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:50:02,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:02,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash -836524199, now seen corresponding path program 1 times [2023-12-15 18:50:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:02,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243580613] [2023-12-15 18:50:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 339 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:50:03,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:03,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243580613] [2023-12-15 18:50:03,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243580613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:50:03,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416531814] [2023-12-15 18:50:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:03,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:50:03,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:50:03,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:50:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:03,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:50:03,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:50:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-15 18:50:04,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:50:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416531814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:04,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:50:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 18:50:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916122629] [2023-12-15 18:50:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:50:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:50:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:50:04,013 INFO L87 Difference]: Start difference. First operand 38304 states and 46131 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:08,377 INFO L93 Difference]: Finished difference Result 109653 states and 133185 transitions. [2023-12-15 18:50:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:50:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 384 [2023-12-15 18:50:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:08,459 INFO L225 Difference]: With dead ends: 109653 [2023-12-15 18:50:08,459 INFO L226 Difference]: Without dead ends: 71350 [2023-12-15 18:50:08,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:50:08,491 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1837 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4758 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 4758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:08,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 27 Invalid, 5418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 4758 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-15 18:50:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71350 states. [2023-12-15 18:50:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71350 to 71348. [2023-12-15 18:50:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71348 states, 71347 states have (on average 1.192089366056036) internal successors, (85052), 71347 states have internal predecessors, (85052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71348 states to 71348 states and 85052 transitions. [2023-12-15 18:50:09,203 INFO L78 Accepts]: Start accepts. Automaton has 71348 states and 85052 transitions. Word has length 384 [2023-12-15 18:50:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:09,203 INFO L495 AbstractCegarLoop]: Abstraction has 71348 states and 85052 transitions. [2023-12-15 18:50:09,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 71348 states and 85052 transitions. [2023-12-15 18:50:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-15 18:50:09,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:09,211 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:09,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:50:09,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:50:09,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:09,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash -453827364, now seen corresponding path program 1 times [2023-12-15 18:50:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:09,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919154703] [2023-12-15 18:50:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:09,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-12-15 18:50:09,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:09,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919154703] [2023-12-15 18:50:09,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919154703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:09,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:09,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:09,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371228423] [2023-12-15 18:50:09,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:09,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:09,776 INFO L87 Difference]: Start difference. First operand 71348 states and 85052 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:12,775 INFO L93 Difference]: Finished difference Result 165976 states and 199242 transitions. [2023-12-15 18:50:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:12,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 385 [2023-12-15 18:50:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:12,894 INFO L225 Difference]: With dead ends: 165976 [2023-12-15 18:50:12,894 INFO L226 Difference]: Without dead ends: 95380 [2023-12-15 18:50:12,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:12,927 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 693 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:12,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1265 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:50:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95380 states. [2023-12-15 18:50:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95380 to 94629. [2023-12-15 18:50:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94629 states, 94628 states have (on average 1.164021219934903) internal successors, (110149), 94628 states have internal predecessors, (110149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94629 states to 94629 states and 110149 transitions. [2023-12-15 18:50:14,008 INFO L78 Accepts]: Start accepts. Automaton has 94629 states and 110149 transitions. Word has length 385 [2023-12-15 18:50:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:14,008 INFO L495 AbstractCegarLoop]: Abstraction has 94629 states and 110149 transitions. [2023-12-15 18:50:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 94629 states and 110149 transitions. [2023-12-15 18:50:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-15 18:50:14,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:14,016 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:14,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:50:14,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:14,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:14,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1122602698, now seen corresponding path program 1 times [2023-12-15 18:50:14,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:14,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618567335] [2023-12-15 18:50:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:14,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-12-15 18:50:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618567335] [2023-12-15 18:50:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618567335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445925922] [2023-12-15 18:50:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:14,428 INFO L87 Difference]: Start difference. First operand 94629 states and 110149 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:17,425 INFO L93 Difference]: Finished difference Result 207281 states and 241009 transitions. [2023-12-15 18:50:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 450 [2023-12-15 18:50:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:17,589 INFO L225 Difference]: With dead ends: 207281 [2023-12-15 18:50:17,590 INFO L226 Difference]: Without dead ends: 113404 [2023-12-15 18:50:17,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:17,639 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:17,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1242 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:50:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113404 states. [2023-12-15 18:50:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113404 to 113404. [2023-12-15 18:50:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113404 states, 113403 states have (on average 1.1214694496618256) internal successors, (127178), 113403 states have internal predecessors, (127178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113404 states to 113404 states and 127178 transitions. [2023-12-15 18:50:18,897 INFO L78 Accepts]: Start accepts. Automaton has 113404 states and 127178 transitions. Word has length 450 [2023-12-15 18:50:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:18,897 INFO L495 AbstractCegarLoop]: Abstraction has 113404 states and 127178 transitions. [2023-12-15 18:50:18,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 113404 states and 127178 transitions. [2023-12-15 18:50:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-15 18:50:18,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:18,910 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:18,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:50:18,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:18,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1249002487, now seen corresponding path program 1 times [2023-12-15 18:50:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:18,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312211886] [2023-12-15 18:50:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:18,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-15 18:50:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312211886] [2023-12-15 18:50:19,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312211886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:19,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:19,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724450630] [2023-12-15 18:50:19,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:19,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:19,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:19,415 INFO L87 Difference]: Start difference. First operand 113404 states and 127178 transitions. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:22,378 INFO L93 Difference]: Finished difference Result 226056 states and 253599 transitions. [2023-12-15 18:50:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:22,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 515 [2023-12-15 18:50:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:22,537 INFO L225 Difference]: With dead ends: 226056 [2023-12-15 18:50:22,537 INFO L226 Difference]: Without dead ends: 113404 [2023-12-15 18:50:22,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:22,591 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 567 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:22,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1275 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:50:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113404 states. [2023-12-15 18:50:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113404 to 113404. [2023-12-15 18:50:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113404 states, 113403 states have (on average 1.085932470922286) internal successors, (123148), 113403 states have internal predecessors, (123148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113404 states to 113404 states and 123148 transitions. [2023-12-15 18:50:23,946 INFO L78 Accepts]: Start accepts. Automaton has 113404 states and 123148 transitions. Word has length 515 [2023-12-15 18:50:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:23,946 INFO L495 AbstractCegarLoop]: Abstraction has 113404 states and 123148 transitions. [2023-12-15 18:50:23,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 113404 states and 123148 transitions. [2023-12-15 18:50:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-15 18:50:23,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:23,965 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:23,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:50:23,965 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:23,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1647238133, now seen corresponding path program 1 times [2023-12-15 18:50:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:23,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755532885] [2023-12-15 18:50:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:23,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-15 18:50:24,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755532885] [2023-12-15 18:50:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755532885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:24,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:24,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:24,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984167144] [2023-12-15 18:50:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:24,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:24,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:24,326 INFO L87 Difference]: Start difference. First operand 113404 states and 123148 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:27,261 INFO L93 Difference]: Finished difference Result 268863 states and 291866 transitions. [2023-12-15 18:50:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:27,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 520 [2023-12-15 18:50:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:27,465 INFO L225 Difference]: With dead ends: 268863 [2023-12-15 18:50:27,465 INFO L226 Difference]: Without dead ends: 156211 [2023-12-15 18:50:27,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:27,521 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 685 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:27,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1295 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:50:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156211 states. Received shutdown request... [2023-12-15 18:50:27,879 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:50:27,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:50:27,879 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 18:50:27,882 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:27,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:50:27,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:50:27 BoogieIcfgContainer [2023-12-15 18:50:27,885 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:50:27,885 INFO L158 Benchmark]: Toolchain (without parser) took 58698.28ms. Allocated memory was 195.0MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 143.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:50:27,885 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:50:27,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1210.22ms. Allocated memory was 195.0MB in the beginning and 272.6MB in the end (delta: 77.6MB). Free memory was 143.1MB in the beginning and 140.8MB in the end (delta: 2.3MB). Peak memory consumption was 85.2MB. Max. memory is 8.0GB. [2023-12-15 18:50:27,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 254.82ms. Allocated memory is still 272.6MB. Free memory was 140.8MB in the beginning and 166.0MB in the end (delta: -25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-15 18:50:27,886 INFO L158 Benchmark]: Boogie Preprocessor took 447.39ms. Allocated memory is still 272.6MB. Free memory was 166.0MB in the beginning and 156.0MB in the end (delta: 10.0MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2023-12-15 18:50:27,886 INFO L158 Benchmark]: RCFGBuilder took 3064.00ms. Allocated memory was 272.6MB in the beginning and 470.8MB in the end (delta: 198.2MB). Free memory was 156.0MB in the beginning and 204.9MB in the end (delta: -48.8MB). Peak memory consumption was 190.1MB. Max. memory is 8.0GB. [2023-12-15 18:50:27,887 INFO L158 Benchmark]: TraceAbstraction took 53715.29ms. Allocated memory was 470.8MB in the beginning and 3.8GB in the end (delta: 3.3GB). Free memory was 204.3MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 18:50:27,887 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1210.22ms. Allocated memory was 195.0MB in the beginning and 272.6MB in the end (delta: 77.6MB). Free memory was 143.1MB in the beginning and 140.8MB in the end (delta: 2.3MB). Peak memory consumption was 85.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 254.82ms. Allocated memory is still 272.6MB. Free memory was 140.8MB in the beginning and 166.0MB in the end (delta: -25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 447.39ms. Allocated memory is still 272.6MB. Free memory was 166.0MB in the beginning and 156.0MB in the end (delta: 10.0MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * RCFGBuilder took 3064.00ms. Allocated memory was 272.6MB in the beginning and 470.8MB in the end (delta: 198.2MB). Free memory was 156.0MB in the beginning and 204.9MB in the end (delta: -48.8MB). Peak memory consumption was 190.1MB. Max. memory is 8.0GB. * TraceAbstraction took 53715.29ms. Allocated memory was 470.8MB in the beginning and 3.8GB in the end (delta: 3.3GB). Free memory was 204.3MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.3GB. 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: 184]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 184). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.7s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 41.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12066 SdHoareTripleChecker+Valid, 36.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12066 mSDsluCounter, 10308 SdHoareTripleChecker+Invalid, 29.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 9094 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34463 IncrementalHoareTripleChecker+Invalid, 43557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9094 mSolverCounterUnsat, 10195 mSDtfsCounter, 34463 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 706 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113404occurred in iteration=12, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 2263 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 5092 NumberOfCodeBlocks, 5092 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5076 ConstructedInterpolants, 0 QuantifiedInterpolants, 11445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 898 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 5156/5279 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