/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:10:54,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:10:54,938 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 23:10:54,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:10:54,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:10:54,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:10:54,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:10:54,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:10:54,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:10:54,967 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:10:54,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:10:54,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:10:54,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:10:54,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:10:54,968 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:10:54,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:10:54,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:10:54,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:10:54,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:10:54,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:10:54,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:10:54,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:10:54,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:10:54,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:10:54,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:10:54,970 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:10:54,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:10:54,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:10:54,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:10:54,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:10:54,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:10:54,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:10:54,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:10:54,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:10:54,973 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:10:54,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:10:54,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:10:54,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:10:55,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:10:55,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:10:55,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:10:55,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:10:55,195 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:10:55,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2023-12-15 23:10:56,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:10:56,448 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:10:56,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2023-12-15 23:10:56,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48f91563/12fc80e87b0c4846b97770f7637c7495/FLAG42226bc90 [2023-12-15 23:10:56,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48f91563/12fc80e87b0c4846b97770f7637c7495 [2023-12-15 23:10:56,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:10:56,476 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:10:56,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:10:56,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:10:56,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:10:56,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5544b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56, skipping insertion in model container [2023-12-15 23:10:56,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:10:56,683 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c[12968,12981] [2023-12-15 23:10:56,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:10:56,707 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:10:56,745 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c[12968,12981] [2023-12-15 23:10:56,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:10:56,770 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:10:56,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56 WrapperNode [2023-12-15 23:10:56,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:10:56,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:10:56,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:10:56,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:10:56,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,830 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 445 [2023-12-15 23:10:56,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:10:56,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:10:56,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:10:56,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:10:56,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,882 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 23:10:56,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:10:56,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:10:56,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:10:56,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:10:56,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (1/1) ... [2023-12-15 23:10:56,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:10:56,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:56,961 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 23:10:56,970 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 23:10:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:10:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:10:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:10:56,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:10:57,058 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:10:57,059 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:10:57,465 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:10:57,491 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:10:57,491 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:10:57,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:10:57 BoogieIcfgContainer [2023-12-15 23:10:57,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:10:57,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:10:57,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:10:57,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:10:57,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:10:56" (1/3) ... [2023-12-15 23:10:57,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638efa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:10:57, skipping insertion in model container [2023-12-15 23:10:57,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:56" (2/3) ... [2023-12-15 23:10:57,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638efa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:10:57, skipping insertion in model container [2023-12-15 23:10:57,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:10:57" (3/3) ... [2023-12-15 23:10:57,497 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2023-12-15 23:10:57,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:10:57,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:10:57,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:10:57,562 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;@45652d90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:10:57,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:10:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.805084745762712) internal successors, (213), 119 states have internal predecessors, (213), 0 states have call successors, (0), 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 23:10:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:10:57,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:57,576 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] [2023-12-15 23:10:57,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:57,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:57,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1208619071, now seen corresponding path program 1 times [2023-12-15 23:10:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736548182] [2023-12-15 23:10:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:57,833 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 23:10:57,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:57,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736548182] [2023-12-15 23:10:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736548182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:10:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985708951] [2023-12-15 23:10:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:57,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 23:10:57,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 23:10:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:10:57,864 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.805084745762712) internal successors, (213), 119 states have internal predecessors, (213), 0 states have call successors, (0), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 23:10:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:57,903 INFO L93 Difference]: Finished difference Result 184 states and 325 transitions. [2023-12-15 23:10:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 23:10:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-15 23:10:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:57,912 INFO L225 Difference]: With dead ends: 184 [2023-12-15 23:10:57,912 INFO L226 Difference]: Without dead ends: 118 [2023-12-15 23:10:57,914 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 23:10:57,916 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:57,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-15 23:10:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-15 23:10:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.7777777777777777) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 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 23:10:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 208 transitions. [2023-12-15 23:10:57,942 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 208 transitions. Word has length 34 [2023-12-15 23:10:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:57,942 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 208 transitions. [2023-12-15 23:10:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 23:10:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 208 transitions. [2023-12-15 23:10:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:10:57,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:57,943 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] [2023-12-15 23:10:57,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:10:57,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:57,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1397404483, now seen corresponding path program 1 times [2023-12-15 23:10:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:57,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111596615] [2023-12-15 23:10:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:57,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:58,098 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 23:10:58,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:58,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111596615] [2023-12-15 23:10:58,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111596615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:58,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:58,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:58,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252190583] [2023-12-15 23:10:58,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:58,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:58,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:58,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:58,105 INFO L87 Difference]: Start difference. First operand 118 states and 208 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 23:10:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:58,165 INFO L93 Difference]: Finished difference Result 184 states and 319 transitions. [2023-12-15 23:10:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-15 23:10:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:58,169 INFO L225 Difference]: With dead ends: 184 [2023-12-15 23:10:58,169 INFO L226 Difference]: Without dead ends: 118 [2023-12-15 23:10:58,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:58,170 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:58,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-15 23:10:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-15 23:10:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.547008547008547) internal successors, (181), 117 states have internal predecessors, (181), 0 states have call successors, (0), 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 23:10:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 181 transitions. [2023-12-15 23:10:58,176 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 181 transitions. Word has length 34 [2023-12-15 23:10:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:58,176 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 181 transitions. [2023-12-15 23:10:58,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 23:10:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 181 transitions. [2023-12-15 23:10:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:10:58,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:58,178 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:58,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:10:58,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:58,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:58,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1613385332, now seen corresponding path program 1 times [2023-12-15 23:10:58,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:58,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298493164] [2023-12-15 23:10:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:58,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:58,292 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 23:10:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298493164] [2023-12-15 23:10:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298493164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:58,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:58,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:58,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513019739] [2023-12-15 23:10:58,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:58,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:58,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:58,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:58,297 INFO L87 Difference]: Start difference. First operand 118 states and 181 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:10:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:58,335 INFO L93 Difference]: Finished difference Result 233 states and 376 transitions. [2023-12-15 23:10:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-15 23:10:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:58,341 INFO L225 Difference]: With dead ends: 233 [2023-12-15 23:10:58,341 INFO L226 Difference]: Without dead ends: 170 [2023-12-15 23:10:58,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:58,346 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 82 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:58,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 307 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-15 23:10:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2023-12-15 23:10:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5662650602409638) internal successors, (260), 166 states have internal predecessors, (260), 0 states have call successors, (0), 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 23:10:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 260 transitions. [2023-12-15 23:10:58,359 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 260 transitions. Word has length 60 [2023-12-15 23:10:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:58,359 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 260 transitions. [2023-12-15 23:10:58,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:10:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 260 transitions. [2023-12-15 23:10:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:10:58,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:58,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:58,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:10:58,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:58,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1362282236, now seen corresponding path program 1 times [2023-12-15 23:10:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080571451] [2023-12-15 23:10:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:58,477 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 23:10:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080571451] [2023-12-15 23:10:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080571451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:58,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:58,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634696677] [2023-12-15 23:10:58,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:58,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:58,479 INFO L87 Difference]: Start difference. First operand 167 states and 260 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:10:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:58,498 INFO L93 Difference]: Finished difference Result 377 states and 608 transitions. [2023-12-15 23:10:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:58,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:10:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:58,501 INFO L225 Difference]: With dead ends: 377 [2023-12-15 23:10:58,501 INFO L226 Difference]: Without dead ends: 265 [2023-12-15 23:10:58,504 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 23:10:58,509 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 84 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:58,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 324 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-15 23:10:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2023-12-15 23:10:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5923076923076922) internal successors, (414), 260 states have internal predecessors, (414), 0 states have call successors, (0), 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 23:10:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 414 transitions. [2023-12-15 23:10:58,526 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 414 transitions. Word has length 62 [2023-12-15 23:10:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:58,526 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 414 transitions. [2023-12-15 23:10:58,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:10:58,526 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 414 transitions. [2023-12-15 23:10:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:10:58,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:58,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:58,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:10:58,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:58,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash -677250468, now seen corresponding path program 1 times [2023-12-15 23:10:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111232169] [2023-12-15 23:10:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:58,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:58,624 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 23:10:58,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:58,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111232169] [2023-12-15 23:10:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111232169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:58,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:58,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312905474] [2023-12-15 23:10:58,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:58,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:58,625 INFO L87 Difference]: Start difference. First operand 261 states and 414 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 23:10:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:58,645 INFO L93 Difference]: Finished difference Result 645 states and 1044 transitions. [2023-12-15 23:10:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:58,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-15 23:10:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:58,648 INFO L225 Difference]: With dead ends: 645 [2023-12-15 23:10:58,648 INFO L226 Difference]: Without dead ends: 439 [2023-12-15 23:10:58,649 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 23:10:58,649 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 78 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:58,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 325 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-15 23:10:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 433. [2023-12-15 23:10:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.5972222222222223) internal successors, (690), 432 states have internal predecessors, (690), 0 states have call successors, (0), 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 23:10:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 690 transitions. [2023-12-15 23:10:58,663 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 690 transitions. Word has length 64 [2023-12-15 23:10:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:58,663 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 690 transitions. [2023-12-15 23:10:58,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 23:10:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 690 transitions. [2023-12-15 23:10:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 23:10:58,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:58,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:58,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:10:58,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:58,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -338664426, now seen corresponding path program 1 times [2023-12-15 23:10:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914173912] [2023-12-15 23:10:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:58,779 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 23:10:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:58,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914173912] [2023-12-15 23:10:58,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914173912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:58,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:58,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:58,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613375998] [2023-12-15 23:10:58,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:58,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:58,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:58,780 INFO L87 Difference]: Start difference. First operand 433 states and 690 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:10:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:58,892 INFO L93 Difference]: Finished difference Result 2153 states and 3524 transitions. [2023-12-15 23:10:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:10:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 23:10:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:58,913 INFO L225 Difference]: With dead ends: 2153 [2023-12-15 23:10:58,914 INFO L226 Difference]: Without dead ends: 1775 [2023-12-15 23:10:58,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:10:58,915 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 726 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:58,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 973 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:10:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2023-12-15 23:10:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 793. [2023-12-15 23:10:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.6085858585858586) internal successors, (1274), 792 states have internal predecessors, (1274), 0 states have call successors, (0), 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 23:10:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1274 transitions. [2023-12-15 23:10:58,934 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1274 transitions. Word has length 66 [2023-12-15 23:10:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:58,934 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1274 transitions. [2023-12-15 23:10:58,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:10:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1274 transitions. [2023-12-15 23:10:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 23:10:58,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:58,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:58,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:10:58,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:58,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1971383680, now seen corresponding path program 1 times [2023-12-15 23:10:58,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57220926] [2023-12-15 23:10:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:58,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:58,983 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 23:10:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:58,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57220926] [2023-12-15 23:10:58,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57220926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:58,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:58,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507896715] [2023-12-15 23:10:58,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:58,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:58,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:58,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:58,984 INFO L87 Difference]: Start difference. First operand 793 states and 1274 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:10:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:59,046 INFO L93 Difference]: Finished difference Result 2859 states and 4643 transitions. [2023-12-15 23:10:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-15 23:10:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:59,052 INFO L225 Difference]: With dead ends: 2859 [2023-12-15 23:10:59,052 INFO L226 Difference]: Without dead ends: 2121 [2023-12-15 23:10:59,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:10:59,053 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 307 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:59,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 576 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2023-12-15 23:10:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1448. [2023-12-15 23:10:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 1.609536973047685) internal successors, (2329), 1447 states have internal predecessors, (2329), 0 states have call successors, (0), 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 23:10:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2329 transitions. [2023-12-15 23:10:59,082 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2329 transitions. Word has length 67 [2023-12-15 23:10:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:59,082 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2329 transitions. [2023-12-15 23:10:59,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:10:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2329 transitions. [2023-12-15 23:10:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 23:10:59,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:59,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:59,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:10:59,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:59,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1040621249, now seen corresponding path program 1 times [2023-12-15 23:10:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:59,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709667624] [2023-12-15 23:10:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:59,154 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 23:10:59,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:59,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709667624] [2023-12-15 23:10:59,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709667624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:59,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:59,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267690794] [2023-12-15 23:10:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:59,156 INFO L87 Difference]: Start difference. First operand 1448 states and 2329 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 23:10:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:59,225 INFO L93 Difference]: Finished difference Result 4259 states and 6921 transitions. [2023-12-15 23:10:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-15 23:10:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:59,232 INFO L225 Difference]: With dead ends: 4259 [2023-12-15 23:10:59,232 INFO L226 Difference]: Without dead ends: 2866 [2023-12-15 23:10:59,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:10:59,234 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 305 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:59,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 577 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2023-12-15 23:10:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2141. [2023-12-15 23:10:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2140 states have (on average 1.6074766355140186) internal successors, (3440), 2140 states have internal predecessors, (3440), 0 states have call successors, (0), 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 23:10:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3440 transitions. [2023-12-15 23:10:59,273 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3440 transitions. Word has length 68 [2023-12-15 23:10:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:59,273 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3440 transitions. [2023-12-15 23:10:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 23:10:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3440 transitions. [2023-12-15 23:10:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 23:10:59,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:59,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:59,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:10:59,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:59,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2048662089, now seen corresponding path program 1 times [2023-12-15 23:10:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322068308] [2023-12-15 23:10:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:59,329 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 23:10:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322068308] [2023-12-15 23:10:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322068308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:59,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267673342] [2023-12-15 23:10:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:59,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:59,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:59,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:59,331 INFO L87 Difference]: Start difference. First operand 2141 states and 3440 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:10:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:59,412 INFO L93 Difference]: Finished difference Result 6283 states and 10181 transitions. [2023-12-15 23:10:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:59,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-15 23:10:59,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:59,422 INFO L225 Difference]: With dead ends: 6283 [2023-12-15 23:10:59,422 INFO L226 Difference]: Without dead ends: 4197 [2023-12-15 23:10:59,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:10:59,426 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 303 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:59,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 584 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2023-12-15 23:10:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 3147. [2023-12-15 23:10:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 1.6039415130324222) internal successors, (5046), 3146 states have internal predecessors, (5046), 0 states have call successors, (0), 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 23:10:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 5046 transitions. [2023-12-15 23:10:59,484 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 5046 transitions. Word has length 69 [2023-12-15 23:10:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:59,484 INFO L495 AbstractCegarLoop]: Abstraction has 3147 states and 5046 transitions. [2023-12-15 23:10:59,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:10:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 5046 transitions. [2023-12-15 23:10:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 23:10:59,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:59,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:59,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:10:59,486 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:59,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1069193331, now seen corresponding path program 1 times [2023-12-15 23:10:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051220064] [2023-12-15 23:10:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:59,553 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 23:10:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051220064] [2023-12-15 23:10:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051220064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995090701] [2023-12-15 23:10:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:59,555 INFO L87 Difference]: Start difference. First operand 3147 states and 5046 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:10:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:59,618 INFO L93 Difference]: Finished difference Result 7172 states and 11512 transitions. [2023-12-15 23:10:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:59,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-15 23:10:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:59,630 INFO L225 Difference]: With dead ends: 7172 [2023-12-15 23:10:59,630 INFO L226 Difference]: Without dead ends: 4932 [2023-12-15 23:10:59,633 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 23:10:59,633 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 77 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:59,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 374 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2023-12-15 23:10:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4930. [2023-12-15 23:10:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4929 states have (on average 1.5849056603773586) internal successors, (7812), 4929 states have internal predecessors, (7812), 0 states have call successors, (0), 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 23:10:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7812 transitions. [2023-12-15 23:10:59,744 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7812 transitions. Word has length 69 [2023-12-15 23:10:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:59,744 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7812 transitions. [2023-12-15 23:10:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:10:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7812 transitions. [2023-12-15 23:10:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 23:10:59,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:59,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:59,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:10:59,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:59,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash -999927296, now seen corresponding path program 1 times [2023-12-15 23:10:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877706394] [2023-12-15 23:10:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:59,783 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 23:10:59,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:59,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877706394] [2023-12-15 23:10:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877706394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:59,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381722315] [2023-12-15 23:10:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:59,784 INFO L87 Difference]: Start difference. First operand 4930 states and 7812 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:10:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:59,870 INFO L93 Difference]: Finished difference Result 10876 states and 17286 transitions. [2023-12-15 23:10:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-15 23:10:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:59,901 INFO L225 Difference]: With dead ends: 10876 [2023-12-15 23:10:59,901 INFO L226 Difference]: Without dead ends: 7377 [2023-12-15 23:10:59,907 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 23:10:59,908 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 83 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:59,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 397 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2023-12-15 23:11:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7375. [2023-12-15 23:11:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7375 states, 7374 states have (on average 1.5686194738269597) internal successors, (11567), 7374 states have internal predecessors, (11567), 0 states have call successors, (0), 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 23:11:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 11567 transitions. [2023-12-15 23:11:00,071 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 11567 transitions. Word has length 69 [2023-12-15 23:11:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:00,072 INFO L495 AbstractCegarLoop]: Abstraction has 7375 states and 11567 transitions. [2023-12-15 23:11:00,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:11:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 11567 transitions. [2023-12-15 23:11:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 23:11:00,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:00,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:11:00,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:11:00,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:00,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1995027151, now seen corresponding path program 1 times [2023-12-15 23:11:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:00,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783219225] [2023-12-15 23:11:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:00,106 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 23:11:00,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783219225] [2023-12-15 23:11:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783219225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:00,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:00,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678409818] [2023-12-15 23:11:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:00,107 INFO L87 Difference]: Start difference. First operand 7375 states and 11567 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:11:00,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:00,229 INFO L93 Difference]: Finished difference Result 17748 states and 28009 transitions. [2023-12-15 23:11:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-15 23:11:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:00,247 INFO L225 Difference]: With dead ends: 17748 [2023-12-15 23:11:00,247 INFO L226 Difference]: Without dead ends: 10442 [2023-12-15 23:11:00,254 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 23:11:00,255 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 89 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:00,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 412 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2023-12-15 23:11:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 10440. [2023-12-15 23:11:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10440 states, 10439 states have (on average 1.5749592872880545) internal successors, (16441), 10439 states have internal predecessors, (16441), 0 states have call successors, (0), 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 23:11:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 16441 transitions. [2023-12-15 23:11:00,537 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 16441 transitions. Word has length 69 [2023-12-15 23:11:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:00,538 INFO L495 AbstractCegarLoop]: Abstraction has 10440 states and 16441 transitions. [2023-12-15 23:11:00,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:11:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 16441 transitions. [2023-12-15 23:11:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 23:11:00,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:00,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:11:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:11:00,539 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:00,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash 192928305, now seen corresponding path program 1 times [2023-12-15 23:11:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342573444] [2023-12-15 23:11:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:00,698 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 23:11:00,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342573444] [2023-12-15 23:11:00,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342573444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:00,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:11:00,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771311445] [2023-12-15 23:11:00,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:00,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:11:00,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:11:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:11:00,700 INFO L87 Difference]: Start difference. First operand 10440 states and 16441 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:11:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:00,870 INFO L93 Difference]: Finished difference Result 20813 states and 32792 transitions. [2023-12-15 23:11:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:11:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-15 23:11:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:00,885 INFO L225 Difference]: With dead ends: 20813 [2023-12-15 23:11:00,886 INFO L226 Difference]: Without dead ends: 10442 [2023-12-15 23:11:00,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:11:00,898 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 79 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:00,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 632 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2023-12-15 23:11:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 10440. [2023-12-15 23:11:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10440 states, 10439 states have (on average 1.5605900948366702) internal successors, (16291), 10439 states have internal predecessors, (16291), 0 states have call successors, (0), 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 23:11:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 16291 transitions. [2023-12-15 23:11:01,134 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 16291 transitions. Word has length 71 [2023-12-15 23:11:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:01,134 INFO L495 AbstractCegarLoop]: Abstraction has 10440 states and 16291 transitions. [2023-12-15 23:11:01,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:11:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 16291 transitions. [2023-12-15 23:11:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:11:01,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:01,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:11:01,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:11:01,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:01,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash -604805220, now seen corresponding path program 1 times [2023-12-15 23:11:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:01,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118069374] [2023-12-15 23:11:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:01,252 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 23:11:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118069374] [2023-12-15 23:11:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118069374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:01,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:11:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446380302] [2023-12-15 23:11:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:01,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:11:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:11:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:11:01,253 INFO L87 Difference]: Start difference. First operand 10440 states and 16291 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:11:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:01,555 INFO L93 Difference]: Finished difference Result 30124 states and 47156 transitions. [2023-12-15 23:11:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:11:01,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:11:01,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:01,594 INFO L225 Difference]: With dead ends: 30124 [2023-12-15 23:11:01,595 INFO L226 Difference]: Without dead ends: 19753 [2023-12-15 23:11:01,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:11:01,612 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 229 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:01,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 482 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19753 states. [2023-12-15 23:11:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19753 to 19751. [2023-12-15 23:11:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19751 states, 19750 states have (on average 1.546379746835443) internal successors, (30541), 19750 states have internal predecessors, (30541), 0 states have call successors, (0), 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 23:11:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19751 states to 19751 states and 30541 transitions. [2023-12-15 23:11:02,117 INFO L78 Accepts]: Start accepts. Automaton has 19751 states and 30541 transitions. Word has length 74 [2023-12-15 23:11:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:02,117 INFO L495 AbstractCegarLoop]: Abstraction has 19751 states and 30541 transitions. [2023-12-15 23:11:02,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:11:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 19751 states and 30541 transitions. [2023-12-15 23:11:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 23:11:02,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:02,118 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, 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 23:11:02,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:11:02,119 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:02,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1583611864, now seen corresponding path program 1 times [2023-12-15 23:11:02,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:02,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206930365] [2023-12-15 23:11:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:02,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:02,286 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 23:11:02,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:02,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206930365] [2023-12-15 23:11:02,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206930365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:02,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:02,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:11:02,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102229350] [2023-12-15 23:11:02,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:02,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:11:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:11:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:11:02,288 INFO L87 Difference]: Start difference. First operand 19751 states and 30541 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:11:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:02,468 INFO L93 Difference]: Finished difference Result 20914 states and 32090 transitions. [2023-12-15 23:11:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:11:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-15 23:11:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:02,502 INFO L225 Difference]: With dead ends: 20914 [2023-12-15 23:11:02,502 INFO L226 Difference]: Without dead ends: 20912 [2023-12-15 23:11:02,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:11:02,511 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:02,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 518 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20912 states. [2023-12-15 23:11:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20912 to 20525. [2023-12-15 23:11:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20525 states, 20524 states have (on average 1.5253361917754824) internal successors, (31306), 20524 states have internal predecessors, (31306), 0 states have call successors, (0), 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 23:11:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20525 states to 20525 states and 31306 transitions. [2023-12-15 23:11:02,933 INFO L78 Accepts]: Start accepts. Automaton has 20525 states and 31306 transitions. Word has length 75 [2023-12-15 23:11:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:02,934 INFO L495 AbstractCegarLoop]: Abstraction has 20525 states and 31306 transitions. [2023-12-15 23:11:02,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:11:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 20525 states and 31306 transitions. [2023-12-15 23:11:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:02,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:02,935 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:02,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:11:02,935 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:02,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1304758470, now seen corresponding path program 1 times [2023-12-15 23:11:02,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:02,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132327548] [2023-12-15 23:11:02,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:02,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:11:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132327548] [2023-12-15 23:11:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132327548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:03,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953578386] [2023-12-15 23:11:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:03,005 INFO L87 Difference]: Start difference. First operand 20525 states and 31306 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 23:11:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:03,425 INFO L93 Difference]: Finished difference Result 61286 states and 93384 transitions. [2023-12-15 23:11:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 101 [2023-12-15 23:11:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:03,491 INFO L225 Difference]: With dead ends: 61286 [2023-12-15 23:11:03,492 INFO L226 Difference]: Without dead ends: 40821 [2023-12-15 23:11:03,519 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 23:11:03,519 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 116 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:03,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 407 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40821 states. [2023-12-15 23:11:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40821 to 40819. [2023-12-15 23:11:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40819 states, 40818 states have (on average 1.5133029545788623) internal successors, (61770), 40818 states have internal predecessors, (61770), 0 states have call successors, (0), 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 23:11:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40819 states to 40819 states and 61770 transitions. [2023-12-15 23:11:04,481 INFO L78 Accepts]: Start accepts. Automaton has 40819 states and 61770 transitions. Word has length 101 [2023-12-15 23:11:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:04,481 INFO L495 AbstractCegarLoop]: Abstraction has 40819 states and 61770 transitions. [2023-12-15 23:11:04,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 23:11:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 40819 states and 61770 transitions. [2023-12-15 23:11:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:04,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:04,483 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:04,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:11:04,483 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:04,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1374024505, now seen corresponding path program 1 times [2023-12-15 23:11:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629846459] [2023-12-15 23:11:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 23:11:04,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629846459] [2023-12-15 23:11:04,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629846459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:04,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:04,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:04,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071102918] [2023-12-15 23:11:04,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:04,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:04,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:04,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:04,531 INFO L87 Difference]: Start difference. First operand 40819 states and 61770 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 23:11:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:05,441 INFO L93 Difference]: Finished difference Result 121897 states and 184274 transitions. [2023-12-15 23:11:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 101 [2023-12-15 23:11:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:05,558 INFO L225 Difference]: With dead ends: 121897 [2023-12-15 23:11:05,558 INFO L226 Difference]: Without dead ends: 81180 [2023-12-15 23:11:05,588 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 23:11:05,588 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 102 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:05,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81180 states. [2023-12-15 23:11:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81180 to 81178. [2023-12-15 23:11:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81178 states, 81177 states have (on average 1.5011271665619572) internal successors, (121857), 81177 states have internal predecessors, (121857), 0 states have call successors, (0), 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 23:11:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81178 states to 81178 states and 121857 transitions. [2023-12-15 23:11:07,202 INFO L78 Accepts]: Start accepts. Automaton has 81178 states and 121857 transitions. Word has length 101 [2023-12-15 23:11:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:07,203 INFO L495 AbstractCegarLoop]: Abstraction has 81178 states and 121857 transitions. [2023-12-15 23:11:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 23:11:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 81178 states and 121857 transitions. [2023-12-15 23:11:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:07,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:07,206 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:07,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:11:07,207 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:07,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash 378924650, now seen corresponding path program 1 times [2023-12-15 23:11:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:07,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411925796] [2023-12-15 23:11:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:07,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:11:07,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411925796] [2023-12-15 23:11:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411925796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:07,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:07,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:07,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567981275] [2023-12-15 23:11:07,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:07,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:07,265 INFO L87 Difference]: Start difference. First operand 81178 states and 121857 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:09,078 INFO L93 Difference]: Finished difference Result 242622 states and 363917 transitions. [2023-12-15 23:11:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-15 23:11:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:09,334 INFO L225 Difference]: With dead ends: 242622 [2023-12-15 23:11:09,334 INFO L226 Difference]: Without dead ends: 161640 [2023-12-15 23:11:09,412 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 23:11:09,412 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 117 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:09,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 406 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161640 states. [2023-12-15 23:11:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161640 to 161638. [2023-12-15 23:11:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161638 states, 161637 states have (on average 1.4870790722421228) internal successors, (240367), 161637 states have internal predecessors, (240367), 0 states have call successors, (0), 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 23:11:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161638 states to 161638 states and 240367 transitions. [2023-12-15 23:11:12,733 INFO L78 Accepts]: Start accepts. Automaton has 161638 states and 240367 transitions. Word has length 101 [2023-12-15 23:11:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:12,733 INFO L495 AbstractCegarLoop]: Abstraction has 161638 states and 240367 transitions. [2023-12-15 23:11:12,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 161638 states and 240367 transitions. [2023-12-15 23:11:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:12,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:12,756 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:12,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:11:12,757 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:12,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash 363405932, now seen corresponding path program 1 times [2023-12-15 23:11:12,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:12,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529016777] [2023-12-15 23:11:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:12,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:11:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529016777] [2023-12-15 23:11:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529016777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:12,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:12,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:12,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032485050] [2023-12-15 23:11:12,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:12,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:12,837 INFO L87 Difference]: Start difference. First operand 161638 states and 240367 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:16,618 INFO L93 Difference]: Finished difference Result 483118 states and 717862 transitions. [2023-12-15 23:11:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:16,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-15 23:11:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:17,436 INFO L225 Difference]: With dead ends: 483118 [2023-12-15 23:11:17,436 INFO L226 Difference]: Without dead ends: 321880 [2023-12-15 23:11:17,524 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 23:11:17,525 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 136 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:17,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 423 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321880 states. [2023-12-15 23:11:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321880 to 321878. [2023-12-15 23:11:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321878 states, 321877 states have (on average 1.47296016801449) internal successors, (474112), 321877 states have internal predecessors, (474112), 0 states have call successors, (0), 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 23:11:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321878 states to 321878 states and 474112 transitions. [2023-12-15 23:11:24,563 INFO L78 Accepts]: Start accepts. Automaton has 321878 states and 474112 transitions. Word has length 101 [2023-12-15 23:11:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:24,564 INFO L495 AbstractCegarLoop]: Abstraction has 321878 states and 474112 transitions. [2023-12-15 23:11:24,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 321878 states and 474112 transitions. [2023-12-15 23:11:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:24,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:24,576 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:24,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:11:24,576 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:24,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:24,577 INFO L85 PathProgramCache]: Analyzing trace with hash -533987346, now seen corresponding path program 1 times [2023-12-15 23:11:24,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:24,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982445199] [2023-12-15 23:11:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:24,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:11:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982445199] [2023-12-15 23:11:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982445199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828270746] [2023-12-15 23:11:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:24,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:24,616 INFO L87 Difference]: Start difference. First operand 321878 states and 474112 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:29,024 INFO L93 Difference]: Finished difference Result 483494 states and 710610 transitions. [2023-12-15 23:11:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-15 23:11:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:29,642 INFO L225 Difference]: With dead ends: 483494 [2023-12-15 23:11:29,642 INFO L226 Difference]: Without dead ends: 322224 [2023-12-15 23:11:29,944 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 23:11:29,945 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 107 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:29,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 460 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322224 states. [2023-12-15 23:11:35,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322224 to 322222. [2023-12-15 23:11:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322222 states, 322221 states have (on average 1.4606248506459851) internal successors, (470644), 322221 states have internal predecessors, (470644), 0 states have call successors, (0), 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 23:11:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322222 states to 322222 states and 470644 transitions. [2023-12-15 23:11:37,318 INFO L78 Accepts]: Start accepts. Automaton has 322222 states and 470644 transitions. Word has length 101 [2023-12-15 23:11:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:37,319 INFO L495 AbstractCegarLoop]: Abstraction has 322222 states and 470644 transitions. [2023-12-15 23:11:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 322222 states and 470644 transitions. [2023-12-15 23:11:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:37,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:37,349 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:37,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:11:37,349 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:37,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1545104596, now seen corresponding path program 1 times [2023-12-15 23:11:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:37,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736070669] [2023-12-15 23:11:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:37,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:11:37,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736070669] [2023-12-15 23:11:37,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736070669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:37,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:37,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:11:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25594192] [2023-12-15 23:11:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:37,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:11:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:11:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:11:37,392 INFO L87 Difference]: Start difference. First operand 322222 states and 470644 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:11:41,700 INFO L93 Difference]: Finished difference Result 484038 states and 705449 transitions. [2023-12-15 23:11:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:11:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-15 23:11:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:11:42,695 INFO L225 Difference]: With dead ends: 484038 [2023-12-15 23:11:42,695 INFO L226 Difference]: Without dead ends: 322800 [2023-12-15 23:11:42,814 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 23:11:42,814 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 121 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:42,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:11:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322800 states. [2023-12-15 23:11:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322800 to 322798. [2023-12-15 23:11:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322798 states, 322797 states have (on average 1.4481144496386273) internal successors, (467447), 322797 states have internal predecessors, (467447), 0 states have call successors, (0), 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 23:11:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322798 states to 322798 states and 467447 transitions. [2023-12-15 23:11:50,710 INFO L78 Accepts]: Start accepts. Automaton has 322798 states and 467447 transitions. Word has length 101 [2023-12-15 23:11:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:11:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 322798 states and 467447 transitions. [2023-12-15 23:11:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:11:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 322798 states and 467447 transitions. [2023-12-15 23:11:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:11:50,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:11:50,728 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:11:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:11:50,728 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:11:50,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:11:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1940516074, now seen corresponding path program 1 times [2023-12-15 23:11:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:11:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583523398] [2023-12-15 23:11:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:11:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:11:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:11:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:11:50,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:11:50,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583523398] [2023-12-15 23:11:50,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583523398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:11:50,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:11:50,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:11:50,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900134019] [2023-12-15 23:11:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:11:50,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:11:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:11:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:11:50,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:11:50,829 INFO L87 Difference]: Start difference. First operand 322798 states and 467447 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:11:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:11:54,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:11:54,058 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 355 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:54,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 749 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:11:54,059 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:11:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:11:54,060 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (322798states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (299652 states constructed, input type IntersectNwa). [2023-12-15 23:11:54,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:11:54,068 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:11:54,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:11:54 BoogieIcfgContainer [2023-12-15 23:11:54,070 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:11:54,070 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:11:54,078 INFO L158 Benchmark]: Toolchain (without parser) took 57594.29ms. Allocated memory was 285.2MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 248.1MB in the beginning and 5.8GB in the end (delta: -5.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-15 23:11:54,092 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:11:54,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.72ms. Allocated memory is still 285.2MB. Free memory was 247.8MB in the beginning and 230.9MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 23:11:54,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.12ms. Allocated memory is still 285.2MB. Free memory was 230.9MB in the beginning and 227.5MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:11:54,092 INFO L158 Benchmark]: Boogie Preprocessor took 66.49ms. Allocated memory is still 285.2MB. Free memory was 227.5MB in the beginning and 224.0MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:11:54,092 INFO L158 Benchmark]: RCFGBuilder took 594.02ms. Allocated memory is still 285.2MB. Free memory was 223.6MB in the beginning and 188.7MB in the end (delta: 35.0MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-15 23:11:54,092 INFO L158 Benchmark]: TraceAbstraction took 56576.82ms. Allocated memory was 285.2MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 188.0MB in the beginning and 5.8GB in the end (delta: -5.6GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-15 23:11:54,093 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 181.4MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 293.72ms. Allocated memory is still 285.2MB. Free memory was 247.8MB in the beginning and 230.9MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.12ms. Allocated memory is still 285.2MB. Free memory was 230.9MB in the beginning and 227.5MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.49ms. Allocated memory is still 285.2MB. Free memory was 227.5MB in the beginning and 224.0MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 594.02ms. Allocated memory is still 285.2MB. Free memory was 223.6MB in the beginning and 188.7MB in the end (delta: 35.0MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 56576.82ms. Allocated memory was 285.2MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 188.0MB in the beginning and 5.8GB in the end (delta: -5.6GB). Peak memory consumption was 2.5GB. 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: 567]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 567). Cancelled while NwaCegarLoop was constructing difference of abstraction (322798states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (299652 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.5s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3497 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3497 mSDsluCounter, 10586 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5957 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 637 IncrementalHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 4629 mSDtfsCounter, 637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322798occurred in iteration=21, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 30.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 3852 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1658 NumberOfCodeBlocks, 1658 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1636 ConstructedInterpolants, 0 QuantifiedInterpolants, 5041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 126/126 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