/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:41:03,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:41:03,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:41:03,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:41:03,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:41:03,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:41:03,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:41:03,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:41:03,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:41:03,829 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:41:03,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:41:03,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:41:03,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:41:03,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:41:03,831 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:41:03,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:41:03,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:41:03,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:41:03,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:41:03,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:41:03,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:41:03,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:41:03,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:41:03,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:41:03,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:41:03,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:41:03,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:41:03,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:41:03,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:41:03,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:41:03,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:41:03,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:41:03,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:41:03,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:41:03,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:41:03,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:41:03,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:41:03,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:41:03,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:41:03,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:41:03,836 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:41:03,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:41:03,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:41:03,837 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:41:03,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:41:04,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:41:04,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:41:04,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:41:04,014 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:41:04,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:41:05,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:41:05,252 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:41:05,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:41:05,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18c94034/597f80eeee394adb8f59d2fda835f68c/FLAG80f808df8 [2023-12-21 11:41:05,271 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b18c94034/597f80eeee394adb8f59d2fda835f68c [2023-12-21 11:41:05,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:41:05,274 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:41:05,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:41:05,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:41:05,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:41:05,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec17bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05, skipping insertion in model container [2023-12-21 11:41:05,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:41:05,405 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c[6080,6093] [2023-12-21 11:41:05,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:41:05,421 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:41:05,445 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c[6080,6093] [2023-12-21 11:41:05,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:41:05,455 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:41:05,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05 WrapperNode [2023-12-21 11:41:05,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:41:05,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:41:05,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:41:05,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:41:05,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,487 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-12-21 11:41:05,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:41:05,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:41:05,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:41:05,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:41:05,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,516 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]. [2023-12-21 11:41:05,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:41:05,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:41:05,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:41:05,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:41:05,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (1/1) ... [2023-12-21 11:41:05,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:41:05,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:05,563 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) [2023-12-21 11:41:05,585 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 [2023-12-21 11:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:41:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:41:05,651 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:41:05,653 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:41:05,853 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:41:05,896 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:41:05,896 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:41:05,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:41:05 BoogieIcfgContainer [2023-12-21 11:41:05,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:41:05,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:41:05,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:41:05,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:41:05,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:41:05" (1/3) ... [2023-12-21 11:41:05,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4858f2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:41:05, skipping insertion in model container [2023-12-21 11:41:05,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:05" (2/3) ... [2023-12-21 11:41:05,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4858f2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:41:05, skipping insertion in model container [2023-12-21 11:41:05,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:41:05" (3/3) ... [2023-12-21 11:41:05,902 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:41:05,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:41:05,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:41:05,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:41:05,961 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;@7a269c30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:41:05,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:41:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 52 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 11:41:05,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:05,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:05,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:05,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1356555257, now seen corresponding path program 1 times [2023-12-21 11:41:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:05,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390627453] [2023-12-21 11:41:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390627453] [2023-12-21 11:41:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390627453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:41:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542185975] [2023-12-21 11:41:06,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:41:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:06,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:41:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:41:06,192 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 52 states have internal predecessors, (90), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:06,221 INFO L93 Difference]: Finished difference Result 85 states and 143 transitions. [2023-12-21 11:41:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:41:06,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-21 11:41:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:06,232 INFO L225 Difference]: With dead ends: 85 [2023-12-21 11:41:06,232 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 11:41:06,234 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 [2023-12-21 11:41:06,236 INFO L413 NwaCegarLoop]: 82 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, 82 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 [2023-12-21 11:41:06,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 11:41:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-21 11:41:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2023-12-21 11:41:06,265 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 16 [2023-12-21 11:41:06,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:06,265 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2023-12-21 11:41:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2023-12-21 11:41:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 11:41:06,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:06,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:06,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:41:06,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:06,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash 769749243, now seen corresponding path program 1 times [2023-12-21 11:41:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:06,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335341515] [2023-12-21 11:41:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:06,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335341515] [2023-12-21 11:41:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335341515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:06,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:06,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:41:06,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305977601] [2023-12-21 11:41:06,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:06,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:41:06,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:41:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:41:06,466 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:06,521 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2023-12-21 11:41:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:41:06,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-21 11:41:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:06,525 INFO L225 Difference]: With dead ends: 85 [2023-12-21 11:41:06,525 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 11:41:06,525 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 [2023-12-21 11:41:06,527 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:06,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 11:41:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-21 11:41:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 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) [2023-12-21 11:41:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2023-12-21 11:41:06,539 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 16 [2023-12-21 11:41:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:06,539 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2023-12-21 11:41:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2023-12-21 11:41:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 11:41:06,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:06,540 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] [2023-12-21 11:41:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:41:06,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:06,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 84756620, now seen corresponding path program 1 times [2023-12-21 11:41:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:06,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363413113] [2023-12-21 11:41:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:06,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363413113] [2023-12-21 11:41:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363413113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:06,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:06,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:06,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090142109] [2023-12-21 11:41:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:06,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:06,686 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:06,810 INFO L93 Difference]: Finished difference Result 237 states and 363 transitions. [2023-12-21 11:41:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:41:06,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-21 11:41:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:06,816 INFO L225 Difference]: With dead ends: 237 [2023-12-21 11:41:06,816 INFO L226 Difference]: Without dead ends: 206 [2023-12-21 11:41:06,816 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 [2023-12-21 11:41:06,819 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 318 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:06,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 332 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:41:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-21 11:41:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 80. [2023-12-21 11:41:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2023-12-21 11:41:06,833 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 31 [2023-12-21 11:41:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:06,834 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2023-12-21 11:41:06,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,834 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2023-12-21 11:41:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 11:41:06,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:06,835 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] [2023-12-21 11:41:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:41:06,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:06,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash -912973924, now seen corresponding path program 1 times [2023-12-21 11:41:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257474140] [2023-12-21 11:41:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:06,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:06,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257474140] [2023-12-21 11:41:06,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257474140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:06,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:06,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744718717] [2023-12-21 11:41:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:06,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:06,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:06,915 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:06,941 INFO L93 Difference]: Finished difference Result 189 states and 286 transitions. [2023-12-21 11:41:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:06,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-12-21 11:41:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:06,943 INFO L225 Difference]: With dead ends: 189 [2023-12-21 11:41:06,943 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 11:41:06,945 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 [2023-12-21 11:41:06,952 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:06,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 103 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 11:41:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2023-12-21 11:41:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2023-12-21 11:41:06,964 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 33 [2023-12-21 11:41:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:06,965 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2023-12-21 11:41:06,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2023-12-21 11:41:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 11:41:06,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:06,966 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] [2023-12-21 11:41:06,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:41:06,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:06,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -910828972, now seen corresponding path program 1 times [2023-12-21 11:41:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898792402] [2023-12-21 11:41:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898792402] [2023-12-21 11:41:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898792402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91405705] [2023-12-21 11:41:07,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:07,157 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:07,214 INFO L93 Difference]: Finished difference Result 232 states and 347 transitions. [2023-12-21 11:41:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-12-21 11:41:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:07,215 INFO L225 Difference]: With dead ends: 232 [2023-12-21 11:41:07,215 INFO L226 Difference]: Without dead ends: 127 [2023-12-21 11:41:07,218 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 [2023-12-21 11:41:07,218 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 106 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:07,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 150 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-21 11:41:07,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-12-21 11:41:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 124 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) [2023-12-21 11:41:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2023-12-21 11:41:07,236 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 33 [2023-12-21 11:41:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:07,236 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2023-12-21 11:41:07,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2023-12-21 11:41:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:41:07,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:07,237 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] [2023-12-21 11:41:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:41:07,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:07,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1815029063, now seen corresponding path program 1 times [2023-12-21 11:41:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997263056] [2023-12-21 11:41:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997263056] [2023-12-21 11:41:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997263056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:41:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132668598] [2023-12-21 11:41:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:41:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:41:07,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:41:07,378 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2023-12-21 11:41:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:07,399 INFO L93 Difference]: Finished difference Result 133 states and 190 transitions. [2023-12-21 11:41:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:41:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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 [2023-12-21 11:41:07,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:07,401 INFO L225 Difference]: With dead ends: 133 [2023-12-21 11:41:07,401 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 11:41:07,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:41:07,402 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 2 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:07,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 310 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 11:41:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2023-12-21 11:41:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4375) internal successors, (184), 128 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 184 transitions. [2023-12-21 11:41:07,421 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 184 transitions. Word has length 34 [2023-12-21 11:41:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:07,421 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 184 transitions. [2023-12-21 11:41:07,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2023-12-21 11:41:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 184 transitions. [2023-12-21 11:41:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 11:41:07,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:07,422 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] [2023-12-21 11:41:07,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:41:07,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:07,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1381419564, now seen corresponding path program 1 times [2023-12-21 11:41:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251398012] [2023-12-21 11:41:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:07,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251398012] [2023-12-21 11:41:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251398012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390062572] [2023-12-21 11:41:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:07,451 INFO L87 Difference]: Start difference. First operand 129 states and 184 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:07,465 INFO L93 Difference]: Finished difference Result 331 states and 484 transitions. [2023-12-21 11:41:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:07,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-21 11:41:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:07,466 INFO L225 Difference]: With dead ends: 331 [2023-12-21 11:41:07,466 INFO L226 Difference]: Without dead ends: 222 [2023-12-21 11:41:07,467 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 [2023-12-21 11:41:07,467 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:07,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 144 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-21 11:41:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2023-12-21 11:41:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4383561643835616) internal successors, (315), 219 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 315 transitions. [2023-12-21 11:41:07,477 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 315 transitions. Word has length 35 [2023-12-21 11:41:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:07,477 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 315 transitions. [2023-12-21 11:41:07,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 315 transitions. [2023-12-21 11:41:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 11:41:07,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:07,481 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] [2023-12-21 11:41:07,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:41:07,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:07,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash -492686124, now seen corresponding path program 1 times [2023-12-21 11:41:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:07,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391052630] [2023-12-21 11:41:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:07,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391052630] [2023-12-21 11:41:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391052630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132176589] [2023-12-21 11:41:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:07,511 INFO L87 Difference]: Start difference. First operand 220 states and 315 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:07,531 INFO L93 Difference]: Finished difference Result 588 states and 849 transitions. [2023-12-21 11:41:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-21 11:41:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:07,533 INFO L225 Difference]: With dead ends: 588 [2023-12-21 11:41:07,533 INFO L226 Difference]: Without dead ends: 388 [2023-12-21 11:41:07,534 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 [2023-12-21 11:41:07,535 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 35 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:07,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 146 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-21 11:41:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2023-12-21 11:41:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.4155844155844155) internal successors, (545), 385 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 545 transitions. [2023-12-21 11:41:07,552 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 545 transitions. Word has length 35 [2023-12-21 11:41:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:07,553 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 545 transitions. [2023-12-21 11:41:07,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,553 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 545 transitions. [2023-12-21 11:41:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 11:41:07,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:07,555 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] [2023-12-21 11:41:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:41:07,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:07,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1137438489, now seen corresponding path program 1 times [2023-12-21 11:41:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:07,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397286495] [2023-12-21 11:41:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397286495] [2023-12-21 11:41:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397286495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129951273] [2023-12-21 11:41:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:07,597 INFO L87 Difference]: Start difference. First operand 386 states and 545 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:07,618 INFO L93 Difference]: Finished difference Result 777 states and 1119 transitions. [2023-12-21 11:41:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-21 11:41:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:07,620 INFO L225 Difference]: With dead ends: 777 [2023-12-21 11:41:07,621 INFO L226 Difference]: Without dead ends: 558 [2023-12-21 11:41:07,622 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 [2023-12-21 11:41:07,624 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 36 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:07,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-12-21 11:41:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 556. [2023-12-21 11:41:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.4108108108108108) internal successors, (783), 555 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 783 transitions. [2023-12-21 11:41:07,641 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 783 transitions. Word has length 37 [2023-12-21 11:41:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:07,641 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 783 transitions. [2023-12-21 11:41:07,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 783 transitions. [2023-12-21 11:41:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:41:07,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:07,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:07,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:41:07,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:07,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash 124429978, now seen corresponding path program 1 times [2023-12-21 11:41:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012317607] [2023-12-21 11:41:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:41:07,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012317607] [2023-12-21 11:41:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012317607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:07,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565984085] [2023-12-21 11:41:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:07,745 INFO L87 Difference]: Start difference. First operand 556 states and 783 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:07,811 INFO L93 Difference]: Finished difference Result 2280 states and 3231 transitions. [2023-12-21 11:41:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 11:41:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:07,816 INFO L225 Difference]: With dead ends: 2280 [2023-12-21 11:41:07,816 INFO L226 Difference]: Without dead ends: 1746 [2023-12-21 11:41:07,817 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 [2023-12-21 11:41:07,817 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 172 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:07,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 265 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2023-12-21 11:41:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1088. [2023-12-21 11:41:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.408463661453542) internal successors, (1531), 1087 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1531 transitions. [2023-12-21 11:41:07,865 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1531 transitions. Word has length 49 [2023-12-21 11:41:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:07,866 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1531 transitions. [2023-12-21 11:41:07,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1531 transitions. [2023-12-21 11:41:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:41:07,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:07,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:41:07,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:07,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1013163418, now seen corresponding path program 1 times [2023-12-21 11:41:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123061882] [2023-12-21 11:41:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:41:07,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:07,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123061882] [2023-12-21 11:41:07,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123061882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:07,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:07,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:07,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128938803] [2023-12-21 11:41:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:07,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:07,943 INFO L87 Difference]: Start difference. First operand 1088 states and 1531 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:08,023 INFO L93 Difference]: Finished difference Result 2812 states and 3979 transitions. [2023-12-21 11:41:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:08,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 11:41:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:08,030 INFO L225 Difference]: With dead ends: 2812 [2023-12-21 11:41:08,030 INFO L226 Difference]: Without dead ends: 2278 [2023-12-21 11:41:08,031 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 [2023-12-21 11:41:08,031 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 173 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:08,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 262 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2023-12-21 11:41:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1888. [2023-12-21 11:41:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.4006359300476947) internal successors, (2643), 1887 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2643 transitions. [2023-12-21 11:41:08,087 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2643 transitions. Word has length 49 [2023-12-21 11:41:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:08,088 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2643 transitions. [2023-12-21 11:41:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2643 transitions. [2023-12-21 11:41:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 11:41:08,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:08,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:41:08,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:08,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1439437598, now seen corresponding path program 1 times [2023-12-21 11:41:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059730568] [2023-12-21 11:41:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:08,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:08,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059730568] [2023-12-21 11:41:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059730568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:08,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:08,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381809714] [2023-12-21 11:41:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:08,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:08,156 INFO L87 Difference]: Start difference. First operand 1888 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:08,191 INFO L93 Difference]: Finished difference Result 3251 states and 4593 transitions. [2023-12-21 11:41:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-21 11:41:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:08,195 INFO L225 Difference]: With dead ends: 3251 [2023-12-21 11:41:08,195 INFO L226 Difference]: Without dead ends: 1385 [2023-12-21 11:41:08,196 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 [2023-12-21 11:41:08,197 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:08,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 143 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-12-21 11:41:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1383. [2023-12-21 11:41:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.4052098408104197) internal successors, (1942), 1382 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1942 transitions. [2023-12-21 11:41:08,231 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1942 transitions. Word has length 51 [2023-12-21 11:41:08,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:08,231 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1942 transitions. [2023-12-21 11:41:08,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1942 transitions. [2023-12-21 11:41:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 11:41:08,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:08,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:41:08,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:08,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash 854869599, now seen corresponding path program 1 times [2023-12-21 11:41:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877505796] [2023-12-21 11:41:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:08,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:41:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877505796] [2023-12-21 11:41:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877505796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:08,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:08,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559094877] [2023-12-21 11:41:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:08,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:08,292 INFO L87 Difference]: Start difference. First operand 1383 states and 1942 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:08,379 INFO L93 Difference]: Finished difference Result 2543 states and 3602 transitions. [2023-12-21 11:41:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 51 [2023-12-21 11:41:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:08,385 INFO L225 Difference]: With dead ends: 2543 [2023-12-21 11:41:08,385 INFO L226 Difference]: Without dead ends: 2157 [2023-12-21 11:41:08,385 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 [2023-12-21 11:41:08,386 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 167 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:08,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 286 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2023-12-21 11:41:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2023-12-21 11:41:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.407701019252548) internal successors, (2486), 1766 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2486 transitions. [2023-12-21 11:41:08,429 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2486 transitions. Word has length 51 [2023-12-21 11:41:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:08,429 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 2486 transitions. [2023-12-21 11:41:08,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2486 transitions. [2023-12-21 11:41:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:41:08,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:08,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:08,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:41:08,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:08,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1284392075, now seen corresponding path program 1 times [2023-12-21 11:41:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:08,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606192478] [2023-12-21 11:41:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606192478] [2023-12-21 11:41:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606192478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:08,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:08,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395886424] [2023-12-21 11:41:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:08,486 INFO L87 Difference]: Start difference. First operand 1767 states and 2486 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:08,512 INFO L93 Difference]: Finished difference Result 2635 states and 3712 transitions. [2023-12-21 11:41:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 11:41:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:08,515 INFO L225 Difference]: With dead ends: 2635 [2023-12-21 11:41:08,515 INFO L226 Difference]: Without dead ends: 905 [2023-12-21 11:41:08,517 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 [2023-12-21 11:41:08,517 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:08,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 128 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-21 11:41:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 903. [2023-12-21 11:41:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.3791574279379157) internal successors, (1244), 902 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1244 transitions. [2023-12-21 11:41:08,539 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1244 transitions. Word has length 52 [2023-12-21 11:41:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:08,539 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1244 transitions. [2023-12-21 11:41:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1244 transitions. [2023-12-21 11:41:08,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:41:08,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:08,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:08,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:41:08,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:08,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2034831399, now seen corresponding path program 1 times [2023-12-21 11:41:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:08,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612883908] [2023-12-21 11:41:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:08,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:08,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612883908] [2023-12-21 11:41:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612883908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:08,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:08,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458530139] [2023-12-21 11:41:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:08,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:08,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:08,585 INFO L87 Difference]: Start difference. First operand 903 states and 1244 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:08,601 INFO L93 Difference]: Finished difference Result 1339 states and 1849 transitions. [2023-12-21 11:41:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 11:41:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:08,602 INFO L225 Difference]: With dead ends: 1339 [2023-12-21 11:41:08,602 INFO L226 Difference]: Without dead ends: 473 [2023-12-21 11:41:08,604 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 [2023-12-21 11:41:08,604 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 26 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:08,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-21 11:41:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2023-12-21 11:41:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3446808510638297) internal successors, (632), 470 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 632 transitions. [2023-12-21 11:41:08,615 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 632 transitions. Word has length 54 [2023-12-21 11:41:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:08,615 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 632 transitions. [2023-12-21 11:41:08,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:08,615 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 632 transitions. [2023-12-21 11:41:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 11:41:08,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:08,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:41:08,616 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:08,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1368007847, now seen corresponding path program 1 times [2023-12-21 11:41:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698407648] [2023-12-21 11:41:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698407648] [2023-12-21 11:41:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698407648] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:08,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49904155] [2023-12-21 11:41:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:08,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:08,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:08,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:41:08,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:41:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:09,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 11:41:09,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:41:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:41:09,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:41:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:41:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49904155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:41:09,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:41:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-12-21 11:41:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966737274] [2023-12-21 11:41:09,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:41:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:41:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:41:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:41:09,275 INFO L87 Difference]: Start difference. First operand 471 states and 632 transitions. Second operand has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:09,956 INFO L93 Difference]: Finished difference Result 2474 states and 3300 transitions. [2023-12-21 11:41:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 11:41:09,957 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 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 56 [2023-12-21 11:41:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:09,961 INFO L225 Difference]: With dead ends: 2474 [2023-12-21 11:41:09,962 INFO L226 Difference]: Without dead ends: 2040 [2023-12-21 11:41:09,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 11:41:09,976 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 920 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:09,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 394 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:41:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2023-12-21 11:41:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1974. [2023-12-21 11:41:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.264571718195641) internal successors, (2495), 1973 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2495 transitions. [2023-12-21 11:41:10,067 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2495 transitions. Word has length 56 [2023-12-21 11:41:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:10,067 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 2495 transitions. [2023-12-21 11:41:10,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2495 transitions. [2023-12-21 11:41:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 11:41:10,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:10,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:10,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:41:10,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 11:41:10,274 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:10,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1095679797, now seen corresponding path program 1 times [2023-12-21 11:41:10,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:10,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369757838] [2023-12-21 11:41:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:10,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:10,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369757838] [2023-12-21 11:41:10,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369757838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:10,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226025702] [2023-12-21 11:41:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:10,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:10,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:10,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:41:10,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:41:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:10,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:41:10,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:41:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:11,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:41:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226025702] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:41:11,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:41:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-21 11:41:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342567056] [2023-12-21 11:41:11,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:41:11,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:41:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:41:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:41:11,599 INFO L87 Difference]: Start difference. First operand 1974 states and 2495 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 26 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:12,091 INFO L93 Difference]: Finished difference Result 4521 states and 5708 transitions. [2023-12-21 11:41:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 11:41:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 26 states have internal predecessors, (143), 0 states have call successors, (0), 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 57 [2023-12-21 11:41:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:12,099 INFO L225 Difference]: With dead ends: 4521 [2023-12-21 11:41:12,100 INFO L226 Difference]: Without dead ends: 2827 [2023-12-21 11:41:12,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 11:41:12,102 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 426 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:12,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 552 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:41:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2023-12-21 11:41:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2633. [2023-12-21 11:41:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2632 states have (on average 1.2587386018237081) internal successors, (3313), 2632 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3313 transitions. [2023-12-21 11:41:12,178 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3313 transitions. Word has length 57 [2023-12-21 11:41:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:12,206 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3313 transitions. [2023-12-21 11:41:12,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 26 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3313 transitions. [2023-12-21 11:41:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 11:41:12,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:12,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:12,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:41:12,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 11:41:12,408 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:12,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash -389389031, now seen corresponding path program 1 times [2023-12-21 11:41:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:12,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64385595] [2023-12-21 11:41:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64385595] [2023-12-21 11:41:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64385595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449527395] [2023-12-21 11:41:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:12,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:12,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:41:12,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:41:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:12,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:41:12,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:41:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:13,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:41:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:13,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449527395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:41:13,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:41:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-21 11:41:13,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539734140] [2023-12-21 11:41:13,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:41:13,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:41:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:13,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:41:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:41:13,646 INFO L87 Difference]: Start difference. First operand 2633 states and 3313 transitions. Second operand has 27 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:14,252 INFO L93 Difference]: Finished difference Result 7574 states and 9521 transitions. [2023-12-21 11:41:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 11:41:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 0 states have call successors, (0), 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 57 [2023-12-21 11:41:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:14,264 INFO L225 Difference]: With dead ends: 7574 [2023-12-21 11:41:14,264 INFO L226 Difference]: Without dead ends: 5489 [2023-12-21 11:41:14,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 11:41:14,267 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 583 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:14,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 519 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:41:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2023-12-21 11:41:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5099. [2023-12-21 11:41:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 1.2416633974107494) internal successors, (6330), 5098 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 6330 transitions. [2023-12-21 11:41:14,412 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 6330 transitions. Word has length 57 [2023-12-21 11:41:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:14,413 INFO L495 AbstractCegarLoop]: Abstraction has 5099 states and 6330 transitions. [2023-12-21 11:41:14,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 26 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 6330 transitions. [2023-12-21 11:41:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 11:41:14,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:14,415 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:41:14,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:41:14,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 11:41:14,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:14,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1814795045, now seen corresponding path program 1 times [2023-12-21 11:41:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:14,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107068300] [2023-12-21 11:41:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:14,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107068300] [2023-12-21 11:41:15,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107068300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:15,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651270727] [2023-12-21 11:41:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:15,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:15,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:15,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:41:15,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:41:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:15,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:41:15,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:41:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:16,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:41:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651270727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:41:18,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:41:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 20] total 44 [2023-12-21 11:41:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893900364] [2023-12-21 11:41:18,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:41:18,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 11:41:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 11:41:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1678, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 11:41:18,534 INFO L87 Difference]: Start difference. First operand 5099 states and 6330 transitions. Second operand has 44 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 44 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:41,551 INFO L93 Difference]: Finished difference Result 13360 states and 16526 transitions. [2023-12-21 11:41:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2023-12-21 11:41:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 44 states have internal predecessors, (160), 0 states have call successors, (0), 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 58 [2023-12-21 11:41:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:41,571 INFO L225 Difference]: With dead ends: 13360 [2023-12-21 11:41:41,571 INFO L226 Difference]: Without dead ends: 10344 [2023-12-21 11:41:41,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29071 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=11146, Invalid=62566, Unknown=0, NotChecked=0, Total=73712 [2023-12-21 11:41:41,583 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 3651 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 3496 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 3496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:41,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3651 Valid, 3112 Invalid, 3654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 3496 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 11:41:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10344 states. [2023-12-21 11:41:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10344 to 5082. [2023-12-21 11:41:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 5081 states have (on average 1.2405038378271993) internal successors, (6303), 5081 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 6303 transitions. [2023-12-21 11:41:41,772 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 6303 transitions. Word has length 58 [2023-12-21 11:41:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:41,773 INFO L495 AbstractCegarLoop]: Abstraction has 5082 states and 6303 transitions. [2023-12-21 11:41:41,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 44 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 6303 transitions. [2023-12-21 11:41:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 11:41:41,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:41,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:41,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:41:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:41,979 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:41,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1808659035, now seen corresponding path program 1 times [2023-12-21 11:41:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306807925] [2023-12-21 11:41:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:43,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:43,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306807925] [2023-12-21 11:41:43,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306807925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:43,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360902299] [2023-12-21 11:41:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:43,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:43,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:43,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:41:43,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:41:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:43,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:41:43,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:41:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:44,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:41:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360902299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:41:46,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:41:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 17] total 49 [2023-12-21 11:41:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997248947] [2023-12-21 11:41:46,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:41:46,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 11:41:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:46,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 11:41:46,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2256, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 11:41:46,261 INFO L87 Difference]: Start difference. First operand 5082 states and 6303 transitions. Second operand has 50 states, 50 states have (on average 3.12) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:19,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:19,976 INFO L93 Difference]: Finished difference Result 15085 states and 18538 transitions. [2023-12-21 11:42:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-12-21 11:42:19,976 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.12) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 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 59 [2023-12-21 11:42:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:19,991 INFO L225 Difference]: With dead ends: 15085 [2023-12-21 11:42:19,991 INFO L226 Difference]: Without dead ends: 11220 [2023-12-21 11:42:19,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25475 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=12100, Invalid=53180, Unknown=0, NotChecked=0, Total=65280 [2023-12-21 11:42:19,999 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 3493 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 3505 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3493 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:19,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3493 Valid, 2511 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3505 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 11:42:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2023-12-21 11:42:20,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 3292. [2023-12-21 11:42:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3291 states have (on average 1.2409601944697661) internal successors, (4084), 3291 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4084 transitions. [2023-12-21 11:42:20,252 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4084 transitions. Word has length 59 [2023-12-21 11:42:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:20,252 INFO L495 AbstractCegarLoop]: Abstraction has 3292 states and 4084 transitions. [2023-12-21 11:42:20,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.12) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4084 transitions. [2023-12-21 11:42:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:42:20,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:20,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:20,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:42:20,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:20,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:20,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1708774323, now seen corresponding path program 1 times [2023-12-21 11:42:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654093742] [2023-12-21 11:42:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654093742] [2023-12-21 11:42:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654093742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866158290] [2023-12-21 11:42:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:20,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:20,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:42:20,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:42:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:21,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:42:21,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:22,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:23,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866158290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:23,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:23,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 16] total 40 [2023-12-21 11:42:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557374348] [2023-12-21 11:42:23,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:23,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 11:42:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 11:42:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 11:42:23,459 INFO L87 Difference]: Start difference. First operand 3292 states and 4084 transitions. Second operand has 41 states, 41 states have (on average 3.8780487804878048) internal successors, (159), 40 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:25,861 INFO L93 Difference]: Finished difference Result 4860 states and 6018 transitions. [2023-12-21 11:42:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 11:42:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.8780487804878048) internal successors, (159), 40 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 11:42:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:25,865 INFO L225 Difference]: With dead ends: 4860 [2023-12-21 11:42:25,865 INFO L226 Difference]: Without dead ends: 3476 [2023-12-21 11:42:25,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1051, Invalid=4499, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 11:42:25,867 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 967 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:25,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 414 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:42:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2023-12-21 11:42:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3072. [2023-12-21 11:42:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.243894496906545) internal successors, (3820), 3071 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 3820 transitions. [2023-12-21 11:42:26,052 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 3820 transitions. Word has length 60 [2023-12-21 11:42:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 3820 transitions. [2023-12-21 11:42:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.8780487804878048) internal successors, (159), 40 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 3820 transitions. [2023-12-21 11:42:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:42:26,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:26,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:26,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 11:42:26,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:26,258 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:26,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash -445769254, now seen corresponding path program 1 times [2023-12-21 11:42:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17652039] [2023-12-21 11:42:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 27 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17652039] [2023-12-21 11:42:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17652039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863356002] [2023-12-21 11:42:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:26,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:42:26,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:42:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:27,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:42:27,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:27,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863356002] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:29,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 36 [2023-12-21 11:42:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067329814] [2023-12-21 11:42:29,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:29,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 11:42:29,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 11:42:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 11:42:29,104 INFO L87 Difference]: Start difference. First operand 3072 states and 3820 transitions. Second operand has 36 states, 36 states have (on average 7.25) internal successors, (261), 36 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:35,375 INFO L93 Difference]: Finished difference Result 13803 states and 16995 transitions. [2023-12-21 11:42:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-21 11:42:35,376 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.25) internal successors, (261), 36 states have internal predecessors, (261), 0 states have call successors, (0), 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 97 [2023-12-21 11:42:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:35,385 INFO L225 Difference]: With dead ends: 13803 [2023-12-21 11:42:35,385 INFO L226 Difference]: Without dead ends: 11041 [2023-12-21 11:42:35,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4248 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2250, Invalid=12270, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 11:42:35,389 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 2211 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 2751 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:42:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11041 states. [2023-12-21 11:42:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11041 to 6619. [2023-12-21 11:42:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6618 states have (on average 1.2325475974614688) internal successors, (8157), 6618 states have internal predecessors, (8157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 8157 transitions. [2023-12-21 11:42:35,889 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 8157 transitions. Word has length 97 [2023-12-21 11:42:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:35,889 INFO L495 AbstractCegarLoop]: Abstraction has 6619 states and 8157 transitions. [2023-12-21 11:42:35,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.25) internal successors, (261), 36 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 8157 transitions. [2023-12-21 11:42:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:42:35,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:35,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-21 11:42:35,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:42:36,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:36,104 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:36,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 680535514, now seen corresponding path program 1 times [2023-12-21 11:42:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552805629] [2023-12-21 11:42:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:36,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:36,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552805629] [2023-12-21 11:42:36,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552805629] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:36,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603974346] [2023-12-21 11:42:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:36,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:36,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:42:36,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:42:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:36,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 11:42:36,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:37,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603974346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:39,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:39,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-12-21 11:42:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620852794] [2023-12-21 11:42:39,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:42:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:42:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:42:39,619 INFO L87 Difference]: Start difference. First operand 6619 states and 8157 transitions. Second operand has 32 states, 32 states have (on average 7.34375) internal successors, (235), 31 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:43,739 INFO L93 Difference]: Finished difference Result 15888 states and 19722 transitions. [2023-12-21 11:42:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-21 11:42:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.34375) internal successors, (235), 31 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 11:42:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:43,749 INFO L225 Difference]: With dead ends: 15888 [2023-12-21 11:42:43,749 INFO L226 Difference]: Without dead ends: 9854 [2023-12-21 11:42:43,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4105 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2353, Invalid=11453, Unknown=0, NotChecked=0, Total=13806 [2023-12-21 11:42:43,754 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1223 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:43,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1790 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:42:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9854 states. [2023-12-21 11:42:44,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9854 to 6453. [2023-12-21 11:42:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 1.2318660880347179) internal successors, (7948), 6452 states have internal predecessors, (7948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 7948 transitions. [2023-12-21 11:42:44,263 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 7948 transitions. Word has length 97 [2023-12-21 11:42:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:44,264 INFO L495 AbstractCegarLoop]: Abstraction has 6453 states and 7948 transitions. [2023-12-21 11:42:44,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.34375) internal successors, (235), 31 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 7948 transitions. [2023-12-21 11:42:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:42:44,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:44,265 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:44,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 11:42:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-21 11:42:44,470 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:44,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1386826280, now seen corresponding path program 1 times [2023-12-21 11:42:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389240852] [2023-12-21 11:42:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:44,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389240852] [2023-12-21 11:42:44,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389240852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72231308] [2023-12-21 11:42:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:44,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:44,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:44,971 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:42:44,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:42:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:45,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:42:45,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:45,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:46,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72231308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:46,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:46,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2023-12-21 11:42:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091700453] [2023-12-21 11:42:46,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:42:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:46,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:42:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=862, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:42:46,722 INFO L87 Difference]: Start difference. First operand 6453 states and 7948 transitions. Second operand has 32 states, 32 states have (on average 7.53125) internal successors, (241), 31 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:48,220 INFO L93 Difference]: Finished difference Result 9929 states and 12251 transitions. [2023-12-21 11:42:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:42:48,220 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.53125) internal successors, (241), 31 states have internal predecessors, (241), 0 states have call successors, (0), 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 97 [2023-12-21 11:42:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:48,245 INFO L225 Difference]: With dead ends: 9929 [2023-12-21 11:42:48,246 INFO L226 Difference]: Without dead ends: 6635 [2023-12-21 11:42:48,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=562, Invalid=2300, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 11:42:48,254 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 532 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:48,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 796 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:42:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2023-12-21 11:42:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 6453. [2023-12-21 11:42:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 1.222721636701798) internal successors, (7889), 6452 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 7889 transitions. [2023-12-21 11:42:48,781 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 7889 transitions. Word has length 97 [2023-12-21 11:42:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:48,781 INFO L495 AbstractCegarLoop]: Abstraction has 6453 states and 7889 transitions. [2023-12-21 11:42:48,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.53125) internal successors, (241), 31 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 7889 transitions. [2023-12-21 11:42:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:42:48,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:48,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:42:48,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 11:42:48,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 11:42:48,988 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:48,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2127340584, now seen corresponding path program 1 times [2023-12-21 11:42:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:48,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172318488] [2023-12-21 11:42:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:48,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:49,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172318488] [2023-12-21 11:42:49,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172318488] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345638365] [2023-12-21 11:42:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:49,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:49,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:42:49,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 11:42:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:49,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:42:49,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:50,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345638365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:51,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2023-12-21 11:42:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497108865] [2023-12-21 11:42:51,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:51,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 11:42:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 11:42:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 11:42:51,878 INFO L87 Difference]: Start difference. First operand 6453 states and 7889 transitions. Second operand has 40 states, 40 states have (on average 6.675) internal successors, (267), 39 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:56,193 INFO L93 Difference]: Finished difference Result 11604 states and 14192 transitions. [2023-12-21 11:42:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 11:42:56,193 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.675) internal successors, (267), 39 states have internal predecessors, (267), 0 states have call successors, (0), 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 97 [2023-12-21 11:42:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:56,203 INFO L225 Difference]: With dead ends: 11604 [2023-12-21 11:42:56,203 INFO L226 Difference]: Without dead ends: 8092 [2023-12-21 11:42:56,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1817, Invalid=9525, Unknown=0, NotChecked=0, Total=11342 [2023-12-21 11:42:56,206 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1508 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:56,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1886 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:42:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8092 states. [2023-12-21 11:42:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8092 to 7773. [2023-12-21 11:42:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 7772 states have (on average 1.2112712300566135) internal successors, (9414), 7772 states have internal predecessors, (9414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 9414 transitions. [2023-12-21 11:42:56,997 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 9414 transitions. Word has length 97 [2023-12-21 11:42:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:56,998 INFO L495 AbstractCegarLoop]: Abstraction has 7773 states and 9414 transitions. [2023-12-21 11:42:56,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.675) internal successors, (267), 39 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 9414 transitions. [2023-12-21 11:42:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 11:42:56,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:56,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:57,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-21 11:42:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 11:42:57,205 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:57,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1896241502, now seen corresponding path program 1 times [2023-12-21 11:42:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634426584] [2023-12-21 11:42:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:58,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:58,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634426584] [2023-12-21 11:42:58,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634426584] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:58,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697502074] [2023-12-21 11:42:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:58,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:58,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:42:58,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 11:42:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:58,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 11:42:58,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:43:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:00,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:43:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:05,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697502074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:43:05,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:43:05,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 62 [2023-12-21 11:43:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795776526] [2023-12-21 11:43:05,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:43:05,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 11:43:05,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:43:05,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 11:43:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 11:43:05,181 INFO L87 Difference]: Start difference. First operand 7773 states and 9414 transitions. Second operand has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:44:17,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 11:45:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:45:06,352 INFO L93 Difference]: Finished difference Result 28561 states and 34438 transitions. [2023-12-21 11:45:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2023-12-21 11:45:06,353 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 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 98 [2023-12-21 11:45:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:45:06,393 INFO L225 Difference]: With dead ends: 28561 [2023-12-21 11:45:06,393 INFO L226 Difference]: Without dead ends: 23725 [2023-12-21 11:45:06,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75488 ImplicationChecksByTransitivity, 112.8s TimeCoverageRelationStatistics Valid=24861, Invalid=170061, Unknown=0, NotChecked=0, Total=194922 [2023-12-21 11:45:06,406 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 4552 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4552 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:45:06,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4552 Valid, 4896 Invalid, 5034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-21 11:45:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23725 states. [2023-12-21 11:45:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23725 to 17278. [2023-12-21 11:45:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17278 states, 17277 states have (on average 1.2119002141575506) internal successors, (20938), 17277 states have internal predecessors, (20938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17278 states to 17278 states and 20938 transitions. [2023-12-21 11:45:08,655 INFO L78 Accepts]: Start accepts. Automaton has 17278 states and 20938 transitions. Word has length 98 [2023-12-21 11:45:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:45:08,655 INFO L495 AbstractCegarLoop]: Abstraction has 17278 states and 20938 transitions. [2023-12-21 11:45:08,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 17278 states and 20938 transitions. [2023-12-21 11:45:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 11:45:08,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:45:08,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:45:08,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 11:45:08,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 11:45:08,862 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:45:08,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:45:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash 487185398, now seen corresponding path program 1 times [2023-12-21 11:45:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:45:08,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980298228] [2023-12-21 11:45:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:08,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:45:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:09,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:45:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980298228] [2023-12-21 11:45:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980298228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:45:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115985341] [2023-12-21 11:45:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:09,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:45:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:45:09,749 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:45:09,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 11:45:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:09,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:45:09,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:45:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:11,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:45:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:13,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115985341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:45:13,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:45:13,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 55 [2023-12-21 11:45:13,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211033982] [2023-12-21 11:45:13,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:45:13,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 11:45:13,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:45:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 11:45:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2775, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 11:45:13,801 INFO L87 Difference]: Start difference. First operand 17278 states and 20938 transitions. Second operand has 55 states, 55 states have (on average 5.0181818181818185) internal successors, (276), 55 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:45:37,926 INFO L93 Difference]: Finished difference Result 24151 states and 29213 transitions. [2023-12-21 11:45:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-21 11:45:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.0181818181818185) internal successors, (276), 55 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 11:45:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:45:37,938 INFO L225 Difference]: With dead ends: 24151 [2023-12-21 11:45:37,938 INFO L226 Difference]: Without dead ends: 17868 [2023-12-21 11:45:37,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8652 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=3958, Invalid=25798, Unknown=0, NotChecked=0, Total=29756 [2023-12-21 11:45:37,943 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 2178 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:45:37,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2178 Valid, 2093 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:45:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17868 states. [2023-12-21 11:45:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17868 to 17246. [2023-12-21 11:45:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17246 states, 17245 states have (on average 1.211887503624239) internal successors, (20899), 17245 states have internal predecessors, (20899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17246 states to 17246 states and 20899 transitions. [2023-12-21 11:45:40,318 INFO L78 Accepts]: Start accepts. Automaton has 17246 states and 20899 transitions. Word has length 98 [2023-12-21 11:45:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:45:40,319 INFO L495 AbstractCegarLoop]: Abstraction has 17246 states and 20899 transitions. [2023-12-21 11:45:40,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.0181818181818185) internal successors, (276), 55 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17246 states and 20899 transitions. [2023-12-21 11:45:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 11:45:40,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:45:40,320 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:45:40,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 11:45:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 11:45:40,525 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:45:40,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:45:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1108832462, now seen corresponding path program 1 times [2023-12-21 11:45:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:45:40,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297404324] [2023-12-21 11:45:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:45:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 37 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:45:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297404324] [2023-12-21 11:45:41,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297404324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:45:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779657902] [2023-12-21 11:45:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:41,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:45:41,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:45:41,263 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:45:41,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 11:45:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:41,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 11:45:41,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:45:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 37 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:44,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:45:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:49,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779657902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:45:49,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:45:49,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26, 29] total 73 [2023-12-21 11:45:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075105240] [2023-12-21 11:45:49,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:45:49,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 11:45:49,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:45:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 11:45:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=4746, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 11:45:49,769 INFO L87 Difference]: Start difference. First operand 17246 states and 20899 transitions. Second operand has 73 states, 73 states have (on average 3.6301369863013697) internal successors, (265), 73 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:47:38,926 INFO L93 Difference]: Finished difference Result 50863 states and 61602 transitions. [2023-12-21 11:47:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-12-21 11:47:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.6301369863013697) internal successors, (265), 73 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 11:47:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:47:38,956 INFO L225 Difference]: With dead ends: 50863 [2023-12-21 11:47:38,956 INFO L226 Difference]: Without dead ends: 34704 [2023-12-21 11:47:38,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 443 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79067 ImplicationChecksByTransitivity, 100.2s TimeCoverageRelationStatistics Valid=19864, Invalid=177716, Unknown=0, NotChecked=0, Total=197580 [2023-12-21 11:47:38,974 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 5154 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 7431 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 6421 SdHoareTripleChecker+Invalid, 7747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 7431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:47:38,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5154 Valid, 6421 Invalid, 7747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 7431 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-21 11:47:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34704 states. [2023-12-21 11:47:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34704 to 22304. [2023-12-21 11:47:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22304 states, 22303 states have (on average 1.213200017934807) internal successors, (27058), 22303 states have internal predecessors, (27058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22304 states to 22304 states and 27058 transitions. [2023-12-21 11:47:42,444 INFO L78 Accepts]: Start accepts. Automaton has 22304 states and 27058 transitions. Word has length 99 [2023-12-21 11:47:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:47:42,444 INFO L495 AbstractCegarLoop]: Abstraction has 22304 states and 27058 transitions. [2023-12-21 11:47:42,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.6301369863013697) internal successors, (265), 73 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 22304 states and 27058 transitions. [2023-12-21 11:47:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 11:47:42,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:47:42,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:47:42,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 11:47:42,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 11:47:42,651 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:47:42,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:47:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2074307618, now seen corresponding path program 1 times [2023-12-21 11:47:42,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:47:42,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570571195] [2023-12-21 11:47:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:42,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:47:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:43,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:47:43,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570571195] [2023-12-21 11:47:43,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570571195] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:47:43,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443933629] [2023-12-21 11:47:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:43,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:47:43,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:47:43,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 11:47:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:43,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:47:43,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:47:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:44,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:47:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:45,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443933629] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:47:45,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:47:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 45 [2023-12-21 11:47:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248051304] [2023-12-21 11:47:45,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:47:45,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 11:47:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:47:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 11:47:45,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 11:47:45,812 INFO L87 Difference]: Start difference. First operand 22304 states and 27058 transitions. Second operand has 45 states, 45 states have (on average 6.022222222222222) internal successors, (271), 45 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:48:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:48:00,309 INFO L93 Difference]: Finished difference Result 67772 states and 82339 transitions. [2023-12-21 11:48:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-21 11:48:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.022222222222222) internal successors, (271), 45 states have internal predecessors, (271), 0 states have call successors, (0), 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 100 [2023-12-21 11:48:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:48:00,353 INFO L225 Difference]: With dead ends: 67772 [2023-12-21 11:48:00,353 INFO L226 Difference]: Without dead ends: 48861 [2023-12-21 11:48:00,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7662 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4631, Invalid=19861, Unknown=0, NotChecked=0, Total=24492 [2023-12-21 11:48:00,362 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2378 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:48:00,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 2591 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:48:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48861 states. [2023-12-21 11:48:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48861 to 28103. [2023-12-21 11:48:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28103 states, 28102 states have (on average 1.210696747562451) internal successors, (34023), 28102 states have internal predecessors, (34023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:48:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28103 states to 28103 states and 34023 transitions. [2023-12-21 11:48:04,986 INFO L78 Accepts]: Start accepts. Automaton has 28103 states and 34023 transitions. Word has length 100 [2023-12-21 11:48:04,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:48:04,986 INFO L495 AbstractCegarLoop]: Abstraction has 28103 states and 34023 transitions. [2023-12-21 11:48:04,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.022222222222222) internal successors, (271), 45 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:48:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 28103 states and 34023 transitions. [2023-12-21 11:48:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 11:48:04,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:48:04,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:48:04,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-21 11:48:05,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:48:05,191 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:48:05,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:48:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1153990114, now seen corresponding path program 1 times [2023-12-21 11:48:05,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:48:05,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271734084] [2023-12-21 11:48:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:48:05,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:48:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:48:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:48:05,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:48:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271734084] [2023-12-21 11:48:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271734084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:48:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402519958] [2023-12-21 11:48:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:48:05,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:48:05,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:48:05,965 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:48:05,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 11:48:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:48:06,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 11:48:06,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:48:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:48:08,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:48:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:48:16,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402519958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:48:16,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:48:16,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 24] total 65 [2023-12-21 11:48:16,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939015743] [2023-12-21 11:48:16,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:48:16,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 11:48:16,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:48:16,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 11:48:16,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3884, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:48:16,246 INFO L87 Difference]: Start difference. First operand 28103 states and 34023 transitions. Second operand has 65 states, 65 states have (on average 4.2) internal successors, (273), 65 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:49:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:49:50,073 INFO L93 Difference]: Finished difference Result 56347 states and 68179 transitions. [2023-12-21 11:49:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 335 states. [2023-12-21 11:49:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.2) internal successors, (273), 65 states have internal predecessors, (273), 0 states have call successors, (0), 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 100 [2023-12-21 11:49:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:49:50,101 INFO L225 Difference]: With dead ends: 56347 [2023-12-21 11:49:50,101 INFO L226 Difference]: Without dead ends: 34758 [2023-12-21 11:49:50,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60438 ImplicationChecksByTransitivity, 86.0s TimeCoverageRelationStatistics Valid=18079, Invalid=139927, Unknown=0, NotChecked=0, Total=158006 [2023-12-21 11:49:50,127 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 3851 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 5110 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3851 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 5110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:49:50,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3851 Valid, 4881 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 5110 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-21 11:49:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34758 states. [2023-12-21 11:49:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34758 to 29007. [2023-12-21 11:49:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29007 states, 29006 states have (on average 1.2115424394952767) internal successors, (35142), 29006 states have internal predecessors, (35142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:49:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29007 states to 29007 states and 35142 transitions. [2023-12-21 11:49:55,059 INFO L78 Accepts]: Start accepts. Automaton has 29007 states and 35142 transitions. Word has length 100 [2023-12-21 11:49:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:49:55,059 INFO L495 AbstractCegarLoop]: Abstraction has 29007 states and 35142 transitions. [2023-12-21 11:49:55,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.2) internal successors, (273), 65 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:49:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 29007 states and 35142 transitions. [2023-12-21 11:49:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 11:49:55,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:49:55,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:49:55,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 11:49:55,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:49:55,303 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:49:55,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:49:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1703130636, now seen corresponding path program 1 times [2023-12-21 11:49:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:49:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768828118] [2023-12-21 11:49:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:49:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:49:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:49:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:49:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:49:56,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768828118] [2023-12-21 11:49:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768828118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:49:56,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125912891] [2023-12-21 11:49:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:49:56,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:49:56,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:49:56,858 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:49:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 11:49:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:49:56,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 11:49:56,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:49:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:49:58,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:01,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125912891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:01,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:01,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 22] total 66 [2023-12-21 11:50:01,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700673897] [2023-12-21 11:50:01,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:01,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-21 11:50:01,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-21 11:50:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 11:50:01,537 INFO L87 Difference]: Start difference. First operand 29007 states and 35142 transitions. Second operand has 67 states, 67 states have (on average 4.208955223880597) internal successors, (282), 66 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:17,816 INFO L93 Difference]: Finished difference Result 38029 states and 45999 transitions. [2023-12-21 11:50:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-21 11:50:17,817 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.208955223880597) internal successors, (282), 66 states have internal predecessors, (282), 0 states have call successors, (0), 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 100 [2023-12-21 11:50:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:17,843 INFO L225 Difference]: With dead ends: 38029 [2023-12-21 11:50:17,843 INFO L226 Difference]: Without dead ends: 31274 [2023-12-21 11:50:17,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5928 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=3789, Invalid=21333, Unknown=0, NotChecked=0, Total=25122 [2023-12-21 11:50:17,849 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 2339 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:17,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 2550 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:50:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31274 states. [2023-12-21 11:50:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31274 to 29513. [2023-12-21 11:50:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29513 states, 29512 states have (on average 1.2102534562211982) internal successors, (35717), 29512 states have internal predecessors, (35717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29513 states to 29513 states and 35717 transitions. [2023-12-21 11:50:22,958 INFO L78 Accepts]: Start accepts. Automaton has 29513 states and 35717 transitions. Word has length 100 [2023-12-21 11:50:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:22,958 INFO L495 AbstractCegarLoop]: Abstraction has 29513 states and 35717 transitions. [2023-12-21 11:50:22,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.208955223880597) internal successors, (282), 66 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 29513 states and 35717 transitions. [2023-12-21 11:50:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:50:22,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:22,959 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:22,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 11:50:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:23,164 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:23,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash -146531280, now seen corresponding path program 1 times [2023-12-21 11:50:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235164293] [2023-12-21 11:50:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 38 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:24,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235164293] [2023-12-21 11:50:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235164293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096030452] [2023-12-21 11:50:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:24,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:24,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:24,611 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:50:24,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 11:50:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:24,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 11:50:24,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:27,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 38 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:32,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096030452] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:32,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 69 [2023-12-21 11:50:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375262007] [2023-12-21 11:50:32,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 11:50:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 11:50:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=4463, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 11:50:32,117 INFO L87 Difference]: Start difference. First operand 29513 states and 35717 transitions. Second operand has 70 states, 70 states have (on average 3.757142857142857) internal successors, (263), 69 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:51:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:51:09,226 INFO L93 Difference]: Finished difference Result 55728 states and 67366 transitions. [2023-12-21 11:51:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 11:51:09,226 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.757142857142857) internal successors, (263), 69 states have internal predecessors, (263), 0 states have call successors, (0), 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 [2023-12-21 11:51:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:51:09,255 INFO L225 Difference]: With dead ends: 55728 [2023-12-21 11:51:09,255 INFO L226 Difference]: Without dead ends: 34981 [2023-12-21 11:51:09,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10462 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=4234, Invalid=33596, Unknown=0, NotChecked=0, Total=37830 [2023-12-21 11:51:09,266 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1738 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:51:09,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 2612 Invalid, 3130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 11:51:09,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34981 states. [2023-12-21 11:51:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34981 to 30538. [2023-12-21 11:51:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30538 states, 30537 states have (on average 1.2103677505976356) internal successors, (36961), 30537 states have internal predecessors, (36961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:51:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30538 states to 30538 states and 36961 transitions. [2023-12-21 11:51:14,535 INFO L78 Accepts]: Start accepts. Automaton has 30538 states and 36961 transitions. Word has length 101 [2023-12-21 11:51:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:51:14,535 INFO L495 AbstractCegarLoop]: Abstraction has 30538 states and 36961 transitions. [2023-12-21 11:51:14,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.757142857142857) internal successors, (263), 69 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:51:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 30538 states and 36961 transitions. [2023-12-21 11:51:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:51:14,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:51:14,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:51:14,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-21 11:51:14,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:51:14,741 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:51:14,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:51:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash 311750380, now seen corresponding path program 1 times [2023-12-21 11:51:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:51:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485288244] [2023-12-21 11:51:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:51:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:51:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:51:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:51:17,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:51:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485288244] [2023-12-21 11:51:17,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485288244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:51:17,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460255525] [2023-12-21 11:51:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:51:17,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:51:17,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:51:17,128 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:51:17,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 11:51:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:51:17,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 11:51:17,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:51:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 20 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:51:19,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:51:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:51:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460255525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:51:24,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:51:24,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 23] total 73 [2023-12-21 11:51:24,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992901830] [2023-12-21 11:51:24,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:51:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 11:51:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:51:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 11:51:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=5075, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 11:51:24,015 INFO L87 Difference]: Start difference. First operand 30538 states and 36961 transitions. Second operand has 74 states, 74 states have (on average 3.8513513513513513) internal successors, (285), 73 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:52:56,967 INFO L93 Difference]: Finished difference Result 41149 states and 49632 transitions. [2023-12-21 11:52:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-12-21 11:52:56,971 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.8513513513513513) internal successors, (285), 73 states have internal predecessors, (285), 0 states have call successors, (0), 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 [2023-12-21 11:52:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:52:57,006 INFO L225 Difference]: With dead ends: 41149 [2023-12-21 11:52:57,006 INFO L226 Difference]: Without dead ends: 36576 [2023-12-21 11:52:57,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21515 ImplicationChecksByTransitivity, 85.0s TimeCoverageRelationStatistics Valid=6518, Invalid=61342, Unknown=0, NotChecked=0, Total=67860 [2023-12-21 11:52:57,014 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 3926 mSDsluCounter, 3523 mSDsCounter, 0 mSdLazyCounter, 5616 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3926 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 5912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 5616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:52:57,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3926 Valid, 3623 Invalid, 5912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 5616 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-21 11:52:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36576 states. [2023-12-21 11:53:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36576 to 30874. [2023-12-21 11:53:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30874 states, 30873 states have (on average 1.2098273572377158) internal successors, (37351), 30873 states have internal predecessors, (37351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30874 states to 30874 states and 37351 transitions. [2023-12-21 11:53:02,932 INFO L78 Accepts]: Start accepts. Automaton has 30874 states and 37351 transitions. Word has length 101 [2023-12-21 11:53:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:02,932 INFO L495 AbstractCegarLoop]: Abstraction has 30874 states and 37351 transitions. [2023-12-21 11:53:02,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.8513513513513513) internal successors, (285), 73 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 30874 states and 37351 transitions. [2023-12-21 11:53:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 11:53:02,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:02,935 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:02,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:03,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:03,140 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:03,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -376177005, now seen corresponding path program 1 times [2023-12-21 11:53:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555977595] [2023-12-21 11:53:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 48 proven. 157 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 11:53:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555977595] [2023-12-21 11:53:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555977595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011550815] [2023-12-21 11:53:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:03,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:03,544 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:53:03,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 11:53:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:03,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:53:03,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 74 proven. 131 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 11:53:04,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 48 proven. 157 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 11:53:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011550815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:06,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-21 11:53:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299976325] [2023-12-21 11:53:06,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:53:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:53:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:53:06,664 INFO L87 Difference]: Start difference. First operand 30874 states and 37351 transitions. Second operand has 27 states, 27 states have (on average 9.444444444444445) internal successors, (255), 26 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:13,569 INFO L93 Difference]: Finished difference Result 58132 states and 70545 transitions. [2023-12-21 11:53:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 11:53:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.444444444444445) internal successors, (255), 26 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 11:53:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:13,603 INFO L225 Difference]: With dead ends: 58132 [2023-12-21 11:53:13,604 INFO L226 Difference]: Without dead ends: 33305 [2023-12-21 11:53:13,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=491, Invalid=1671, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 11:53:13,614 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 564 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:13,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 578 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:53:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33305 states. [2023-12-21 11:53:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33305 to 26567. [2023-12-21 11:53:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26567 states, 26566 states have (on average 1.2052247233305728) internal successors, (32018), 26566 states have internal predecessors, (32018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26567 states to 26567 states and 32018 transitions. [2023-12-21 11:53:19,073 INFO L78 Accepts]: Start accepts. Automaton has 26567 states and 32018 transitions. Word has length 137 [2023-12-21 11:53:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:19,073 INFO L495 AbstractCegarLoop]: Abstraction has 26567 states and 32018 transitions. [2023-12-21 11:53:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.444444444444445) internal successors, (255), 26 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26567 states and 32018 transitions. [2023-12-21 11:53:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 11:53:19,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:19,076 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:19,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:19,280 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:19,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 941066869, now seen corresponding path program 1 times [2023-12-21 11:53:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937394854] [2023-12-21 11:53:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 79 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:53:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:19,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937394854] [2023-12-21 11:53:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937394854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:19,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766271955] [2023-12-21 11:53:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:19,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:19,951 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:53:19,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 11:53:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:20,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:53:20,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 57 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:22,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 55 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766271955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:27,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:27,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 26] total 67 [2023-12-21 11:53:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170911773] [2023-12-21 11:53:27,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:27,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-21 11:53:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-21 11:53:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=3901, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 11:53:27,554 INFO L87 Difference]: Start difference. First operand 26567 states and 32018 transitions. Second operand has 67 states, 67 states have (on average 5.7164179104477615) internal successors, (383), 67 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:54,061 INFO L93 Difference]: Finished difference Result 53483 states and 64509 transitions. [2023-12-21 11:53:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-12-21 11:53:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.7164179104477615) internal successors, (383), 67 states have internal predecessors, (383), 0 states have call successors, (0), 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 137 [2023-12-21 11:53:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:54,101 INFO L225 Difference]: With dead ends: 53483 [2023-12-21 11:53:54,101 INFO L226 Difference]: Without dead ends: 41634 [2023-12-21 11:53:54,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16570 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=8115, Invalid=44097, Unknown=0, NotChecked=0, Total=52212 [2023-12-21 11:53:54,109 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 3238 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 3753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:54,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3238 Valid, 3480 Invalid, 3753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 11:53:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41634 states. [2023-12-21 11:54:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41634 to 32680. [2023-12-21 11:54:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32680 states, 32679 states have (on average 1.2036476024358151) internal successors, (39334), 32679 states have internal predecessors, (39334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32680 states to 32680 states and 39334 transitions. [2023-12-21 11:54:01,837 INFO L78 Accepts]: Start accepts. Automaton has 32680 states and 39334 transitions. Word has length 137 [2023-12-21 11:54:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:54:01,837 INFO L495 AbstractCegarLoop]: Abstraction has 32680 states and 39334 transitions. [2023-12-21 11:54:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.7164179104477615) internal successors, (383), 67 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32680 states and 39334 transitions. [2023-12-21 11:54:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 11:54:01,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:54:01,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:54:01,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 11:54:02,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 11:54:02,045 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:54:02,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:54:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -571453837, now seen corresponding path program 1 times [2023-12-21 11:54:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:54:02,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656271655] [2023-12-21 11:54:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:54:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 15 proven. 189 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 11:54:02,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:54:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656271655] [2023-12-21 11:54:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656271655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:54:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33280461] [2023-12-21 11:54:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:02,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:54:02,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:54:02,190 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:54:02,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 11:54:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:02,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 11:54:02,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 17 proven. 189 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 11:54:02,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 176 proven. 44 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:54:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33280461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:02,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:02,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9] total 15 [2023-12-21 11:54:02,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003119744] [2023-12-21 11:54:02,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:02,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 11:54:02,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 11:54:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-12-21 11:54:02,906 INFO L87 Difference]: Start difference. First operand 32680 states and 39334 transitions. Second operand has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:54:09,764 INFO L93 Difference]: Finished difference Result 73389 states and 91195 transitions. [2023-12-21 11:54:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:54:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 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 138 [2023-12-21 11:54:09,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:54:09,802 INFO L225 Difference]: With dead ends: 73389 [2023-12-21 11:54:09,802 INFO L226 Difference]: Without dead ends: 41303 [2023-12-21 11:54:09,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:54:09,810 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 204 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:54:09,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 842 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:54:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41303 states. [2023-12-21 11:54:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41303 to 41297. [2023-12-21 11:54:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41297 states, 41296 states have (on average 1.1785887253002711) internal successors, (48671), 41296 states have internal predecessors, (48671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41297 states to 41297 states and 48671 transitions. [2023-12-21 11:54:16,846 INFO L78 Accepts]: Start accepts. Automaton has 41297 states and 48671 transitions. Word has length 138 [2023-12-21 11:54:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:54:16,846 INFO L495 AbstractCegarLoop]: Abstraction has 41297 states and 48671 transitions. [2023-12-21 11:54:16,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 41297 states and 48671 transitions. [2023-12-21 11:54:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 11:54:16,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:54:16,848 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:54:16,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 11:54:17,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 11:54:17,053 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:54:17,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:54:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1365393407, now seen corresponding path program 1 times [2023-12-21 11:54:17,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:54:17,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893481545] [2023-12-21 11:54:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:54:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 136 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 11:54:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:54:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893481545] [2023-12-21 11:54:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893481545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:54:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750459252] [2023-12-21 11:54:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:18,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:54:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:54:18,301 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:54:18,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 11:54:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:18,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 11:54:18,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 138 proven. 61 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 11:54:20,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 138 proven. 61 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 11:54:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750459252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:22,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 20] total 59 [2023-12-21 11:54:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393597680] [2023-12-21 11:54:22,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:22,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 11:54:22,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:22,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 11:54:22,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3125, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 11:54:22,541 INFO L87 Difference]: Start difference. First operand 41297 states and 48671 transitions. Second operand has 59 states, 59 states have (on average 4.830508474576271) internal successors, (285), 59 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:54:56,605 INFO L93 Difference]: Finished difference Result 57170 states and 67119 transitions. [2023-12-21 11:54:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-21 11:54:56,607 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.830508474576271) internal successors, (285), 59 states have internal predecessors, (285), 0 states have call successors, (0), 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 138 [2023-12-21 11:54:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:54:56,655 INFO L225 Difference]: With dead ends: 57170 [2023-12-21 11:54:56,658 INFO L226 Difference]: Without dead ends: 52844 [2023-12-21 11:54:56,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13835 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=6849, Invalid=36623, Unknown=0, NotChecked=0, Total=43472 [2023-12-21 11:54:56,666 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3674 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:54:56,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 2338 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:54:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52844 states. Received shutdown request... [2023-12-21 11:55:01,924 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 11:55:01,924 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 [2023-12-21 11:55:02,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-21 11:55:03,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 11:55:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52844 to 41253. [2023-12-21 11:55:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41253 states, 41252 states have (on average 1.1787549694560264) internal successors, (48626), 41252 states have internal predecessors, (48626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:03,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:55:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 11:55:03,447 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-21 11:55:03,480 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:03,483 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 11:55:03,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:55:03 BoogieIcfgContainer [2023-12-21 11:55:03,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 11:55:03,488 INFO L158 Benchmark]: Toolchain (without parser) took 838213.96ms. Allocated memory was 178.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 137.4MB in the beginning and 486.8MB in the end (delta: -349.5MB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-21 11:55:03,491 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:55:03,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.38ms. Allocated memory is still 178.3MB. Free memory was 137.4MB in the beginning and 123.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 11:55:03,492 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.60ms. Allocated memory is still 178.3MB. Free memory was 123.8MB in the beginning and 121.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 11:55:03,493 INFO L158 Benchmark]: Boogie Preprocessor took 38.57ms. Allocated memory is still 178.3MB. Free memory was 121.3MB in the beginning and 118.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 11:55:03,494 INFO L158 Benchmark]: RCFGBuilder took 369.48ms. Allocated memory is still 178.3MB. Free memory was 118.9MB in the beginning and 98.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-21 11:55:03,494 INFO L158 Benchmark]: TraceAbstraction took 837589.12ms. Allocated memory was 178.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 98.2MB in the beginning and 486.8MB in the end (delta: -388.6MB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-21 11:55:03,495 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.38ms. Allocated memory is still 178.3MB. Free memory was 137.4MB in the beginning and 123.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.60ms. Allocated memory is still 178.3MB. Free memory was 123.8MB in the beginning and 121.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.57ms. Allocated memory is still 178.3MB. Free memory was 121.3MB in the beginning and 118.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 369.48ms. Allocated memory is still 178.3MB. Free memory was 118.9MB in the beginning and 98.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 837589.12ms. Allocated memory was 178.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 98.2MB in the beginning and 486.8MB in the end (delta: -388.6MB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 287]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 287). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 837.5s, OverallIterations: 37, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 662.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50473 SdHoareTripleChecker+Valid, 46.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50473 mSDsluCounter, 54466 SdHoareTripleChecker+Invalid, 41.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50986 mSDsCounter, 3008 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57136 IncrementalHoareTripleChecker+Invalid, 60144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3008 mSolverCounterUnsat, 3480 mSDtfsCounter, 57136 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7398 GetRequests, 3539 SyntacticMatches, 12 SemanticMatches, 3847 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368476 ImplicationChecksByTransitivity, 571.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41297occurred in iteration=36, InterpolantAutomatonStates: 2969, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 64.5s AutomataMinimizationTime, 37 MinimizatonAttempts, 97734 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 103.3s InterpolantComputationTime, 4740 NumberOfCodeBlocks, 4740 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 6741 ConstructedInterpolants, 0 QuantifiedInterpolants, 178183 SizeOfPredicates, 206 NumberOfNonLiveVariables, 7874 ConjunctsInSsa, 654 ConjunctsInUnsatCore, 81 InterpolantComputations, 15 PerfectInterpolantSequences, 2354/6168 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