/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:15:05,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:15:05,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:15:05,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:15:05,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:15:05,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:15:05,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:15:05,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:15:05,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:15:05,627 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:15:05,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:15:05,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:15:05,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:15:05,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:15:05,629 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:15:05,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:15:05,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:15:05,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:15:05,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:15:05,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:15:05,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:15:05,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:15:05,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:15:05,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:15:05,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:15:05,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:15:05,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:15:05,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:15:05,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:15:05,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:15:05,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:15:05,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:15:05,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:15:05,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:15:05,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:15:05,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:15:05,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:15:05,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:15:05,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:15:05,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:15:05,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:15:05,848 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:15:05,849 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:15:05,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20.c [2023-12-15 18:15:06,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:15:07,125 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:15:07,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label20.c [2023-12-15 18:15:07,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8328c6ec/f1ece760a5d64e00b606438a5fe335cb/FLAGe8d035a2f [2023-12-15 18:15:07,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8328c6ec/f1ece760a5d64e00b606438a5fe335cb [2023-12-15 18:15:07,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:15:07,155 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:15:07,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:15:07,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:15:07,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:15:07,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5149b95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07, skipping insertion in model container [2023-12-15 18:15:07,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,221 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:15:07,610 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label20.c[60555,60568] [2023-12-15 18:15:07,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:15:07,645 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:15:07,767 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label20.c[60555,60568] [2023-12-15 18:15:07,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:15:07,789 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:15:07,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07 WrapperNode [2023-12-15 18:15:07,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:15:07,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:15:07,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:15:07,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:15:07,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,913 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-15 18:15:07,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:15:07,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:15:07,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:15:07,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:15:07,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,962 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:15:07,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:07,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:08,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:08,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:08,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:08,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:08,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:15:08,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:15:08,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:15:08,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:15:08,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (1/1) ... [2023-12-15 18:15:08,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:15:08,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:08,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:15:08,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:15:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:15:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:15:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:15:08,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:15:08,202 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:15:08,204 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:15:09,418 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:15:09,471 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:15:09,471 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:15:09,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:15:09 BoogieIcfgContainer [2023-12-15 18:15:09,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:15:09,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:15:09,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:15:09,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:15:09,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:15:07" (1/3) ... [2023-12-15 18:15:09,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9abb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:15:09, skipping insertion in model container [2023-12-15 18:15:09,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:15:07" (2/3) ... [2023-12-15 18:15:09,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9abb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:15:09, skipping insertion in model container [2023-12-15 18:15:09,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:15:09" (3/3) ... [2023-12-15 18:15:09,479 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2023-12-15 18:15:09,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:15:09,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:15:09,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:15:09,547 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;@7f5261d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:15:09,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:15:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-15 18:15:09,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:09,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:09,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:09,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2072600556, now seen corresponding path program 1 times [2023-12-15 18:15:09,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:09,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107320453] [2023-12-15 18:15:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:09,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:10,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107320453] [2023-12-15 18:15:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107320453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:10,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:10,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:10,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521898554] [2023-12-15 18:15:10,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:10,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:15:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:15:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:15:10,060 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:10,107 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-15 18:15:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:15:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2023-12-15 18:15:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:10,137 INFO L225 Difference]: With dead ends: 479 [2023-12-15 18:15:10,137 INFO L226 Difference]: Without dead ends: 238 [2023-12-15 18:15:10,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:15:10,142 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:10,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:15:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-15 18:15:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-15 18:15:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-15 18:15:10,191 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 194 [2023-12-15 18:15:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:10,192 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-15 18:15:10,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-15 18:15:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-15 18:15:10,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:10,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:10,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:15:10,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:10,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1791017754, now seen corresponding path program 1 times [2023-12-15 18:15:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:10,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214601145] [2023-12-15 18:15:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214601145] [2023-12-15 18:15:10,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214601145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:10,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:10,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069658780] [2023-12-15 18:15:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:10,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:10,629 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:11,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:11,421 INFO L93 Difference]: Finished difference Result 698 states and 1151 transitions. [2023-12-15 18:15:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2023-12-15 18:15:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:11,424 INFO L225 Difference]: With dead ends: 698 [2023-12-15 18:15:11,424 INFO L226 Difference]: Without dead ends: 461 [2023-12-15 18:15:11,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:11,426 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 61 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:11,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 148 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:15:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-15 18:15:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 459. [2023-12-15 18:15:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.539301310043668) internal successors, (705), 458 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 705 transitions. [2023-12-15 18:15:11,444 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 705 transitions. Word has length 194 [2023-12-15 18:15:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:11,444 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 705 transitions. [2023-12-15 18:15:11,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:11,445 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 705 transitions. [2023-12-15 18:15:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-15 18:15:11,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:11,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:11,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:15:11,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:11,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1942180839, now seen corresponding path program 1 times [2023-12-15 18:15:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619699438] [2023-12-15 18:15:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:11,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:11,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619699438] [2023-12-15 18:15:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619699438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124875674] [2023-12-15 18:15:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:11,604 INFO L87 Difference]: Start difference. First operand 459 states and 705 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:12,240 INFO L93 Difference]: Finished difference Result 1343 states and 2078 transitions. [2023-12-15 18:15:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:12,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-15 18:15:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:12,243 INFO L225 Difference]: With dead ends: 1343 [2023-12-15 18:15:12,243 INFO L226 Difference]: Without dead ends: 885 [2023-12-15 18:15:12,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:12,248 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:12,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:15:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-15 18:15:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 869. [2023-12-15 18:15:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.5138248847926268) internal successors, (1314), 868 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1314 transitions. [2023-12-15 18:15:12,276 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1314 transitions. Word has length 202 [2023-12-15 18:15:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:12,278 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1314 transitions. [2023-12-15 18:15:12,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1314 transitions. [2023-12-15 18:15:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-15 18:15:12,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:12,285 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:12,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:15:12,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:12,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:12,286 INFO L85 PathProgramCache]: Analyzing trace with hash 688768246, now seen corresponding path program 1 times [2023-12-15 18:15:12,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623641259] [2023-12-15 18:15:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:12,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:15:12,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623641259] [2023-12-15 18:15:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623641259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:12,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:12,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:15:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501281981] [2023-12-15 18:15:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:12,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:15:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:15:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:12,859 INFO L87 Difference]: Start difference. First operand 869 states and 1314 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:13,573 INFO L93 Difference]: Finished difference Result 1883 states and 2885 transitions. [2023-12-15 18:15:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:15:13,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 209 [2023-12-15 18:15:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:13,577 INFO L225 Difference]: With dead ends: 1883 [2023-12-15 18:15:13,577 INFO L226 Difference]: Without dead ends: 841 [2023-12-15 18:15:13,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:13,579 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 299 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:13,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 44 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:15:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-15 18:15:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2023-12-15 18:15:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.3654761904761905) internal successors, (1147), 840 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1147 transitions. [2023-12-15 18:15:13,594 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1147 transitions. Word has length 209 [2023-12-15 18:15:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:13,595 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1147 transitions. [2023-12-15 18:15:13,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1147 transitions. [2023-12-15 18:15:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-15 18:15:13,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:13,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:13,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:15:13,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:13,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2014451645, now seen corresponding path program 1 times [2023-12-15 18:15:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:13,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112268873] [2023-12-15 18:15:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112268873] [2023-12-15 18:15:13,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112268873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:13,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:13,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367327556] [2023-12-15 18:15:13,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:13,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:13,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:13,867 INFO L87 Difference]: Start difference. First operand 841 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:14,391 INFO L93 Difference]: Finished difference Result 2506 states and 3423 transitions. [2023-12-15 18:15:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:14,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2023-12-15 18:15:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:14,396 INFO L225 Difference]: With dead ends: 2506 [2023-12-15 18:15:14,396 INFO L226 Difference]: Without dead ends: 1666 [2023-12-15 18:15:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:14,399 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 230 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:14,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 47 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-12-15 18:15:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1657. [2023-12-15 18:15:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 1.3568840579710144) internal successors, (2247), 1656 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2247 transitions. [2023-12-15 18:15:14,424 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2247 transitions. Word has length 217 [2023-12-15 18:15:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:14,425 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2247 transitions. [2023-12-15 18:15:14,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2247 transitions. [2023-12-15 18:15:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-15 18:15:14,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:14,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:14,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:15:14,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:14,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:14,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1887790853, now seen corresponding path program 1 times [2023-12-15 18:15:14,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:14,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546609013] [2023-12-15 18:15:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:14,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:14,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:14,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546609013] [2023-12-15 18:15:14,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546609013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:14,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:14,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:14,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914276037] [2023-12-15 18:15:14,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:14,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:14,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:14,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:14,612 INFO L87 Difference]: Start difference. First operand 1657 states and 2247 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:15,072 INFO L93 Difference]: Finished difference Result 4951 states and 6719 transitions. [2023-12-15 18:15:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2023-12-15 18:15:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:15,081 INFO L225 Difference]: With dead ends: 4951 [2023-12-15 18:15:15,081 INFO L226 Difference]: Without dead ends: 3295 [2023-12-15 18:15:15,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:15,085 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 205 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 118 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:15:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2023-12-15 18:15:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3287. [2023-12-15 18:15:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3286 states have (on average 1.3429701765063908) internal successors, (4413), 3286 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 4413 transitions. [2023-12-15 18:15:15,135 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 4413 transitions. Word has length 220 [2023-12-15 18:15:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:15,136 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 4413 transitions. [2023-12-15 18:15:15,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 4413 transitions. [2023-12-15 18:15:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 18:15:15,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:15,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:15,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:15:15,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:15,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash -901216960, now seen corresponding path program 1 times [2023-12-15 18:15:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915353574] [2023-12-15 18:15:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:15,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915353574] [2023-12-15 18:15:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915353574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:15,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079444582] [2023-12-15 18:15:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:15,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:15,332 INFO L87 Difference]: Start difference. First operand 3287 states and 4413 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:15,921 INFO L93 Difference]: Finished difference Result 8212 states and 11000 transitions. [2023-12-15 18:15:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-12-15 18:15:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:15,934 INFO L225 Difference]: With dead ends: 8212 [2023-12-15 18:15:15,934 INFO L226 Difference]: Without dead ends: 4926 [2023-12-15 18:15:15,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:15,942 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:15,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 55 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2023-12-15 18:15:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 4923. [2023-12-15 18:15:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 4922 states have (on average 1.334213734254368) internal successors, (6567), 4922 states have internal predecessors, (6567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 6567 transitions. [2023-12-15 18:15:16,022 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 6567 transitions. Word has length 222 [2023-12-15 18:15:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:16,022 INFO L495 AbstractCegarLoop]: Abstraction has 4923 states and 6567 transitions. [2023-12-15 18:15:16,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 6567 transitions. [2023-12-15 18:15:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-15 18:15:16,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:16,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:16,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:15:16,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1898764923, now seen corresponding path program 1 times [2023-12-15 18:15:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356323710] [2023-12-15 18:15:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:16,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:16,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356323710] [2023-12-15 18:15:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356323710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:16,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77052648] [2023-12-15 18:15:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:16,291 INFO L87 Difference]: Start difference. First operand 4923 states and 6567 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:16,844 INFO L93 Difference]: Finished difference Result 14746 states and 19678 transitions. [2023-12-15 18:15:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:16,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2023-12-15 18:15:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:16,868 INFO L225 Difference]: With dead ends: 14746 [2023-12-15 18:15:16,868 INFO L226 Difference]: Without dead ends: 9824 [2023-12-15 18:15:16,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:16,875 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 200 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 106 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9824 states. [2023-12-15 18:15:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9824 to 9811. [2023-12-15 18:15:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9811 states, 9810 states have (on average 1.3283384301732926) internal successors, (13031), 9810 states have internal predecessors, (13031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9811 states to 9811 states and 13031 transitions. [2023-12-15 18:15:17,007 INFO L78 Accepts]: Start accepts. Automaton has 9811 states and 13031 transitions. Word has length 224 [2023-12-15 18:15:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:17,007 INFO L495 AbstractCegarLoop]: Abstraction has 9811 states and 13031 transitions. [2023-12-15 18:15:17,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:17,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9811 states and 13031 transitions. [2023-12-15 18:15:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-15 18:15:17,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:17,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:15:17,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:17,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1006516399, now seen corresponding path program 1 times [2023-12-15 18:15:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262108122] [2023-12-15 18:15:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:17,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:17,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262108122] [2023-12-15 18:15:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262108122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:15:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246193554] [2023-12-15 18:15:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:15:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:15:17,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:17,448 INFO L87 Difference]: Start difference. First operand 9811 states and 13031 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:18,377 INFO L93 Difference]: Finished difference Result 26482 states and 35143 transitions. [2023-12-15 18:15:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:15:18,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-12-15 18:15:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:18,411 INFO L225 Difference]: With dead ends: 26482 [2023-12-15 18:15:18,411 INFO L226 Difference]: Without dead ends: 16324 [2023-12-15 18:15:18,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:18,425 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 198 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:18,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 111 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:15:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16324 states. [2023-12-15 18:15:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16324 to 16323. [2023-12-15 18:15:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16323 states, 16322 states have (on average 1.308724421026835) internal successors, (21361), 16322 states have internal predecessors, (21361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16323 states to 16323 states and 21361 transitions. [2023-12-15 18:15:18,693 INFO L78 Accepts]: Start accepts. Automaton has 16323 states and 21361 transitions. Word has length 225 [2023-12-15 18:15:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:18,693 INFO L495 AbstractCegarLoop]: Abstraction has 16323 states and 21361 transitions. [2023-12-15 18:15:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16323 states and 21361 transitions. [2023-12-15 18:15:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-15 18:15:18,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:18,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:18,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:15:18,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:18,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash 937875663, now seen corresponding path program 1 times [2023-12-15 18:15:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221660505] [2023-12-15 18:15:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221660505] [2023-12-15 18:15:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221660505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770431116] [2023-12-15 18:15:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:19,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:15:19,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:15:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:19,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:15:19,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:15:19,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:15:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770431116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:19,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:15:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:15:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645355741] [2023-12-15 18:15:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:19,365 INFO L87 Difference]: Start difference. First operand 16323 states and 21361 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:19,924 INFO L93 Difference]: Finished difference Result 31026 states and 40601 transitions. [2023-12-15 18:15:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:19,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 229 [2023-12-15 18:15:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:19,947 INFO L225 Difference]: With dead ends: 31026 [2023-12-15 18:15:19,947 INFO L226 Difference]: Without dead ends: 14704 [2023-12-15 18:15:19,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:19,963 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:19,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 341 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14704 states. [2023-12-15 18:15:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14704 to 14687. [2023-12-15 18:15:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14687 states, 14686 states have (on average 1.2836034318398475) internal successors, (18851), 14686 states have internal predecessors, (18851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14687 states to 14687 states and 18851 transitions. [2023-12-15 18:15:20,221 INFO L78 Accepts]: Start accepts. Automaton has 14687 states and 18851 transitions. Word has length 229 [2023-12-15 18:15:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:20,221 INFO L495 AbstractCegarLoop]: Abstraction has 14687 states and 18851 transitions. [2023-12-15 18:15:20,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14687 states and 18851 transitions. [2023-12-15 18:15:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-15 18:15:20,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:20,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:20,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:15:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:15:20,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:20,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1638319125, now seen corresponding path program 1 times [2023-12-15 18:15:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:20,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800836515] [2023-12-15 18:15:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:15:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800836515] [2023-12-15 18:15:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800836515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978318539] [2023-12-15 18:15:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:20,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:20,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:15:20,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:15:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:20,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:15:20,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:15:20,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:15:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978318539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:15:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:15:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240735901] [2023-12-15 18:15:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:20,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:20,817 INFO L87 Difference]: Start difference. First operand 14687 states and 18851 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:21,423 INFO L93 Difference]: Finished difference Result 38918 states and 49913 transitions. [2023-12-15 18:15:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:21,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-12-15 18:15:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:21,457 INFO L225 Difference]: With dead ends: 38918 [2023-12-15 18:15:21,458 INFO L226 Difference]: Without dead ends: 24232 [2023-12-15 18:15:21,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:21,471 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 212 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:21,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 340 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24232 states. [2023-12-15 18:15:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24232 to 24025. [2023-12-15 18:15:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24025 states, 24024 states have (on average 1.1907675657675658) internal successors, (28607), 24024 states have internal predecessors, (28607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24025 states to 24025 states and 28607 transitions. [2023-12-15 18:15:21,733 INFO L78 Accepts]: Start accepts. Automaton has 24025 states and 28607 transitions. Word has length 235 [2023-12-15 18:15:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:21,733 INFO L495 AbstractCegarLoop]: Abstraction has 24025 states and 28607 transitions. [2023-12-15 18:15:21,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24025 states and 28607 transitions. [2023-12-15 18:15:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-15 18:15:21,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:21,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:21,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:15:21,960 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,SelfDestructingSolverStorable10 [2023-12-15 18:15:21,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:21,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash 127421986, now seen corresponding path program 1 times [2023-12-15 18:15:21,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426063773] [2023-12-15 18:15:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:22,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426063773] [2023-12-15 18:15:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426063773] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:22,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010066975] [2023-12-15 18:15:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:22,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:22,289 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) [2023-12-15 18:15:22,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:15:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:22,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:15:22,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:15:22,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:15:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010066975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:22,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:15:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:15:22,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088235304] [2023-12-15 18:15:22,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:22,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:22,599 INFO L87 Difference]: Start difference. First operand 24025 states and 28607 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:23,143 INFO L93 Difference]: Finished difference Result 47037 states and 55971 transitions. [2023-12-15 18:15:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 242 [2023-12-15 18:15:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:23,174 INFO L225 Difference]: With dead ends: 47037 [2023-12-15 18:15:23,174 INFO L226 Difference]: Without dead ends: 24029 [2023-12-15 18:15:23,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:23,193 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:23,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 44 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:15:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24029 states. [2023-12-15 18:15:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24029 to 24025. [2023-12-15 18:15:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24025 states, 24024 states have (on average 1.1877289377289377) internal successors, (28534), 24024 states have internal predecessors, (28534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24025 states to 24025 states and 28534 transitions. [2023-12-15 18:15:23,450 INFO L78 Accepts]: Start accepts. Automaton has 24025 states and 28534 transitions. Word has length 242 [2023-12-15 18:15:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:23,451 INFO L495 AbstractCegarLoop]: Abstraction has 24025 states and 28534 transitions. [2023-12-15 18:15:23,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 24025 states and 28534 transitions. [2023-12-15 18:15:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-15 18:15:23,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:23,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:23,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:15:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:23,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:23,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 511734371, now seen corresponding path program 1 times [2023-12-15 18:15:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518746664] [2023-12-15 18:15:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-15 18:15:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:23,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518746664] [2023-12-15 18:15:23,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518746664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:23,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:15:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503298926] [2023-12-15 18:15:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:23,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:23,982 INFO L87 Difference]: Start difference. First operand 24025 states and 28534 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:24,706 INFO L93 Difference]: Finished difference Result 65102 states and 77346 transitions. [2023-12-15 18:15:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:24,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2023-12-15 18:15:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:24,752 INFO L225 Difference]: With dead ends: 65102 [2023-12-15 18:15:24,752 INFO L226 Difference]: Without dead ends: 41078 [2023-12-15 18:15:24,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:24,774 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 208 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:24,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41078 states. [2023-12-15 18:15:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41078 to 41077. [2023-12-15 18:15:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41077 states, 41076 states have (on average 1.1263998441912553) internal successors, (46268), 41076 states have internal predecessors, (46268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41077 states to 41077 states and 46268 transitions. [2023-12-15 18:15:25,418 INFO L78 Accepts]: Start accepts. Automaton has 41077 states and 46268 transitions. Word has length 275 [2023-12-15 18:15:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:25,418 INFO L495 AbstractCegarLoop]: Abstraction has 41077 states and 46268 transitions. [2023-12-15 18:15:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 41077 states and 46268 transitions. [2023-12-15 18:15:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-15 18:15:25,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:25,439 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:25,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:15:25,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:25,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 370381015, now seen corresponding path program 1 times [2023-12-15 18:15:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:25,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467090702] [2023-12-15 18:15:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-15 18:15:25,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467090702] [2023-12-15 18:15:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467090702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:25,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461619491] [2023-12-15 18:15:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:25,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:25,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:25,811 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) [2023-12-15 18:15:25,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:15:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:25,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:15:25,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-15 18:15:26,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:15:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461619491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:15:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-15 18:15:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83051936] [2023-12-15 18:15:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:26,085 INFO L87 Difference]: Start difference. First operand 41077 states and 46268 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:26,854 INFO L93 Difference]: Finished difference Result 111619 states and 125460 transitions. [2023-12-15 18:15:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2023-12-15 18:15:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:26,943 INFO L225 Difference]: With dead ends: 111619 [2023-12-15 18:15:26,944 INFO L226 Difference]: Without dead ends: 71153 [2023-12-15 18:15:26,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:26,979 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 214 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:26,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 124 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71153 states. [2023-12-15 18:15:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71153 to 68510. [2023-12-15 18:15:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68510 states, 68509 states have (on average 1.1166853989986718) internal successors, (76503), 68509 states have internal predecessors, (76503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68510 states to 68510 states and 76503 transitions. [2023-12-15 18:15:28,139 INFO L78 Accepts]: Start accepts. Automaton has 68510 states and 76503 transitions. Word has length 293 [2023-12-15 18:15:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:28,139 INFO L495 AbstractCegarLoop]: Abstraction has 68510 states and 76503 transitions. [2023-12-15 18:15:28,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 68510 states and 76503 transitions. [2023-12-15 18:15:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-15 18:15:28,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:28,172 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:28,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 18:15:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:28,382 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:28,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1898039958, now seen corresponding path program 1 times [2023-12-15 18:15:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861160905] [2023-12-15 18:15:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-15 18:15:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861160905] [2023-12-15 18:15:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861160905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592666337] [2023-12-15 18:15:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:28,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:28,678 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) [2023-12-15 18:15:28,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:15:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:28,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:15:28,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 18:15:28,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:15:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592666337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:28,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:15:28,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:15:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929770305] [2023-12-15 18:15:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:28,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:28,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:28,859 INFO L87 Difference]: Start difference. First operand 68510 states and 76503 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:29,667 INFO L93 Difference]: Finished difference Result 155518 states and 174159 transitions. [2023-12-15 18:15:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 296 [2023-12-15 18:15:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:29,783 INFO L225 Difference]: With dead ends: 155518 [2023-12-15 18:15:29,783 INFO L226 Difference]: Without dead ends: 87619 [2023-12-15 18:15:29,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:29,841 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 203 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:29,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 294 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:15:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87619 states. [2023-12-15 18:15:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87619 to 85580. [2023-12-15 18:15:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85580 states, 85579 states have (on average 1.1139882447796772) internal successors, (95334), 85579 states have internal predecessors, (95334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85580 states to 85580 states and 95334 transitions. [2023-12-15 18:15:31,283 INFO L78 Accepts]: Start accepts. Automaton has 85580 states and 95334 transitions. Word has length 296 [2023-12-15 18:15:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:31,283 INFO L495 AbstractCegarLoop]: Abstraction has 85580 states and 95334 transitions. [2023-12-15 18:15:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 85580 states and 95334 transitions. [2023-12-15 18:15:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-15 18:15:31,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:31,338 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:31,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 18:15:31,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 18:15:31,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:31,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash 241604003, now seen corresponding path program 1 times [2023-12-15 18:15:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880811334] [2023-12-15 18:15:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-15 18:15:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880811334] [2023-12-15 18:15:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880811334] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252249523] [2023-12-15 18:15:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:31,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:31,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:31,893 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) [2023-12-15 18:15:31,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 18:15:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:32,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 18:15:32,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-15 18:15:32,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:15:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-15 18:15:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252249523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:15:32,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:15:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-15 18:15:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466059634] [2023-12-15 18:15:32,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:15:32,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:15:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:15:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:15:32,545 INFO L87 Difference]: Start difference. First operand 85580 states and 95334 transitions. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:35,973 INFO L93 Difference]: Finished difference Result 250697 states and 278414 transitions. [2023-12-15 18:15:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:15:35,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 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 316 [2023-12-15 18:15:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:36,187 INFO L225 Difference]: With dead ends: 250697 [2023-12-15 18:15:36,188 INFO L226 Difference]: Without dead ends: 165321 [2023-12-15 18:15:36,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:15:36,236 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1098 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 3321 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 3321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 229 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 3321 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:15:36,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165321 states. [2023-12-15 18:15:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165321 to 162405. [2023-12-15 18:15:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162405 states, 162404 states have (on average 1.1012536637028645) internal successors, (178848), 162404 states have internal predecessors, (178848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162405 states to 162405 states and 178848 transitions. [2023-12-15 18:15:38,635 INFO L78 Accepts]: Start accepts. Automaton has 162405 states and 178848 transitions. Word has length 316 [2023-12-15 18:15:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:38,635 INFO L495 AbstractCegarLoop]: Abstraction has 162405 states and 178848 transitions. [2023-12-15 18:15:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 162405 states and 178848 transitions. [2023-12-15 18:15:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-15 18:15:38,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:38,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:38,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 18:15:38,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 18:15:38,914 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:38,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1312307321, now seen corresponding path program 1 times [2023-12-15 18:15:38,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636965878] [2023-12-15 18:15:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 177 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:39,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:39,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636965878] [2023-12-15 18:15:39,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636965878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:15:39,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974600424] [2023-12-15 18:15:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:39,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:39,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:15:39,484 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) [2023-12-15 18:15:39,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 18:15:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:39,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:15:39,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:15:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:15:39,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:15:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974600424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:39,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:15:39,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:15:39,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983351011] [2023-12-15 18:15:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:39,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:39,760 INFO L87 Difference]: Start difference. First operand 162405 states and 178848 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:40,929 INFO L93 Difference]: Finished difference Result 291875 states and 320884 transitions. [2023-12-15 18:15:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2023-12-15 18:15:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:41,322 INFO L225 Difference]: With dead ends: 291875 [2023-12-15 18:15:41,339 INFO L226 Difference]: Without dead ends: 129878 [2023-12-15 18:15:41,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:15:41,393 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 159 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:41,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 314 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:15:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129878 states. [2023-12-15 18:15:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129878 to 129873. [2023-12-15 18:15:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129873 states, 129872 states have (on average 1.0850683750153998) internal successors, (140920), 129872 states have internal predecessors, (140920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129873 states to 129873 states and 140920 transitions. [2023-12-15 18:15:43,375 INFO L78 Accepts]: Start accepts. Automaton has 129873 states and 140920 transitions. Word has length 372 [2023-12-15 18:15:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:43,376 INFO L495 AbstractCegarLoop]: Abstraction has 129873 states and 140920 transitions. [2023-12-15 18:15:43,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 129873 states and 140920 transitions. [2023-12-15 18:15:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-15 18:15:43,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:43,459 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:43,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 18:15:43,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:15:43,661 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:43,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1692312, now seen corresponding path program 1 times [2023-12-15 18:15:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991191141] [2023-12-15 18:15:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:43,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-15 18:15:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991191141] [2023-12-15 18:15:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991191141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:44,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:15:44,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571820240] [2023-12-15 18:15:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:15:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:15:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:44,199 INFO L87 Difference]: Start difference. First operand 129873 states and 140920 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:45,847 INFO L93 Difference]: Finished difference Result 376325 states and 407290 transitions. [2023-12-15 18:15:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:15:45,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 480 [2023-12-15 18:15:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:46,204 INFO L225 Difference]: With dead ends: 376325 [2023-12-15 18:15:46,205 INFO L226 Difference]: Without dead ends: 247266 [2023-12-15 18:15:46,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:46,257 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 728 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:46,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 281 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:15:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247266 states. [2023-12-15 18:15:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247266 to 216595. [2023-12-15 18:15:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216595 states, 216594 states have (on average 1.0817474168259509) internal successors, (234300), 216594 states have internal predecessors, (234300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216595 states to 216595 states and 234300 transitions. [2023-12-15 18:15:49,933 INFO L78 Accepts]: Start accepts. Automaton has 216595 states and 234300 transitions. Word has length 480 [2023-12-15 18:15:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:49,933 INFO L495 AbstractCegarLoop]: Abstraction has 216595 states and 234300 transitions. [2023-12-15 18:15:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 216595 states and 234300 transitions. [2023-12-15 18:15:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-15 18:15:50,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:50,063 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:15:50,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:50,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -790280896, now seen corresponding path program 1 times [2023-12-15 18:15:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281524894] [2023-12-15 18:15:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-15 18:15:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281524894] [2023-12-15 18:15:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281524894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:50,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:15:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327050559] [2023-12-15 18:15:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:15:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:15:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:50,509 INFO L87 Difference]: Start difference. First operand 216595 states and 234300 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:52,182 INFO L93 Difference]: Finished difference Result 413077 states and 445915 transitions. [2023-12-15 18:15:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:15:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 504 [2023-12-15 18:15:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:52,485 INFO L225 Difference]: With dead ends: 413077 [2023-12-15 18:15:52,485 INFO L226 Difference]: Without dead ends: 197296 [2023-12-15 18:15:52,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:15:52,526 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 111 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:52,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 286 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:15:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197296 states. [2023-12-15 18:15:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197296 to 171098. [2023-12-15 18:15:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171098 states, 171097 states have (on average 1.0664184643798547) internal successors, (182461), 171097 states have internal predecessors, (182461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171098 states to 171098 states and 182461 transitions. [2023-12-15 18:15:55,417 INFO L78 Accepts]: Start accepts. Automaton has 171098 states and 182461 transitions. Word has length 504 [2023-12-15 18:15:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:15:55,417 INFO L495 AbstractCegarLoop]: Abstraction has 171098 states and 182461 transitions. [2023-12-15 18:15:55,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 171098 states and 182461 transitions. [2023-12-15 18:15:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-15 18:15:55,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:15:55,485 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:15:55,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:15:55,485 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:15:55,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:15:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1133736633, now seen corresponding path program 1 times [2023-12-15 18:15:55,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:15:55,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923258502] [2023-12-15 18:15:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:15:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:15:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:15:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-15 18:15:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:15:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923258502] [2023-12-15 18:15:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923258502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:15:56,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:15:56,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:15:56,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209755223] [2023-12-15 18:15:56,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:15:56,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:15:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:15:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:15:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:56,016 INFO L87 Difference]: Start difference. First operand 171098 states and 182461 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:15:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:15:57,765 INFO L93 Difference]: Finished difference Result 349121 states and 372207 transitions. [2023-12-15 18:15:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:15:57,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 525 [2023-12-15 18:15:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:15:58,001 INFO L225 Difference]: With dead ends: 349121 [2023-12-15 18:15:58,001 INFO L226 Difference]: Without dead ends: 179244 [2023-12-15 18:15:58,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:15:58,071 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 341 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:15:58,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 111 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:15:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179244 states. [2023-12-15 18:16:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179244 to 178615. [2023-12-15 18:16:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178615 states, 178614 states have (on average 1.0639871454645213) internal successors, (190043), 178614 states have internal predecessors, (190043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:16:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178615 states to 178615 states and 190043 transitions. [2023-12-15 18:16:00,676 INFO L78 Accepts]: Start accepts. Automaton has 178615 states and 190043 transitions. Word has length 525 [2023-12-15 18:16:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:16:00,676 INFO L495 AbstractCegarLoop]: Abstraction has 178615 states and 190043 transitions. [2023-12-15 18:16:00,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:16:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 178615 states and 190043 transitions. [2023-12-15 18:16:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-15 18:16:01,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:16:01,058 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:16:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:16:01,068 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:16:01,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:16:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1037093050, now seen corresponding path program 1 times [2023-12-15 18:16:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:16:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230804247] [2023-12-15 18:16:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:16:01,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:16:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:16:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2023-12-15 18:16:01,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:16:01,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230804247] [2023-12-15 18:16:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230804247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:16:01,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:16:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:16:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120920412] [2023-12-15 18:16:01,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:16:01,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:16:01,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:16:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:16:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:16:01,415 INFO L87 Difference]: Start difference. First operand 178615 states and 190043 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:16:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:16:03,005 INFO L93 Difference]: Finished difference Result 514922 states and 548265 transitions. [2023-12-15 18:16:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:16:03,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 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 553 [2023-12-15 18:16:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2023-12-15 18:16:03,650 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:16:03,710 INFO L225 Difference]: With dead ends: 514922 [2023-12-15 18:16:03,711 INFO L226 Difference]: Without dead ends: 337324 [2023-12-15 18:16:03,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:16:03,779 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:16:03,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 483 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:16:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337324 states. [2023-12-15 18:16:04,048 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:16:04,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:16:04,048 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 18:16:04,052 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] [2023-12-15 18:16:04,053 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:16:04,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:16:04 BoogieIcfgContainer [2023-12-15 18:16:04,055 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:16:04,055 INFO L158 Benchmark]: Toolchain (without parser) took 56899.76ms. Allocated memory was 208.7MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 140.3MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-15 18:16:04,055 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory was 158.8MB in the beginning and 158.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:16:04,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.46ms. Allocated memory was 208.7MB in the beginning and 297.8MB in the end (delta: 89.1MB). Free memory was 140.3MB in the beginning and 216.2MB in the end (delta: -75.9MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. [2023-12-15 18:16:04,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.60ms. Allocated memory is still 297.8MB. Free memory was 216.2MB in the beginning and 201.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 18:16:04,056 INFO L158 Benchmark]: Boogie Preprocessor took 123.86ms. Allocated memory is still 297.8MB. Free memory was 201.0MB in the beginning and 188.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 18:16:04,056 INFO L158 Benchmark]: RCFGBuilder took 1433.30ms. Allocated memory is still 297.8MB. Free memory was 188.4MB in the beginning and 148.1MB in the end (delta: 40.3MB). Peak memory consumption was 47.1MB. Max. memory is 8.0GB. [2023-12-15 18:16:04,056 INFO L158 Benchmark]: TraceAbstraction took 54581.00ms. Allocated memory was 297.8MB in the beginning and 7.7GB in the end (delta: 7.4GB). Free memory was 147.0MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-15 18:16:04,057 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory was 158.8MB in the beginning and 158.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 632.46ms. Allocated memory was 208.7MB in the beginning and 297.8MB in the end (delta: 89.1MB). Free memory was 140.3MB in the beginning and 216.2MB in the end (delta: -75.9MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 122.60ms. Allocated memory is still 297.8MB. Free memory was 216.2MB in the beginning and 201.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 123.86ms. Allocated memory is still 297.8MB. Free memory was 201.0MB in the beginning and 188.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1433.30ms. Allocated memory is still 297.8MB. Free memory was 188.4MB in the beginning and 148.1MB in the end (delta: 40.3MB). Peak memory consumption was 47.1MB. Max. memory is 8.0GB. * TraceAbstraction took 54581.00ms. Allocated memory was 297.8MB in the beginning and 7.7GB in the end (delta: 7.4GB). Free memory was 147.0MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 3.7GB. 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: 1630]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1630). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.5s, OverallIterations: 21, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.0s, AutomataDifference: 23.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5211 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5211 mSDsluCounter, 4073 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 942 mSDsCounter, 1976 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14705 IncrementalHoareTripleChecker+Invalid, 16681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1976 mSolverCounterUnsat, 3131 mSDtfsCounter, 14705 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2350 GetRequests, 2306 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216595occurred in iteration=18, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 65382 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 8210 NumberOfCodeBlocks, 8210 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 8497 ConstructedInterpolants, 0 QuantifiedInterpolants, 24244 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3581 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 4991/5350 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