/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:55:55,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:55:55,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:55:55,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:55:55,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:55:55,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:55:55,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:55:55,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:55:55,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:55:55,688 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:55:55,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:55:55,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:55:55,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:55:55,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:55:55,690 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:55:55,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:55:55,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:55:55,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:55:55,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:55:55,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:55:55,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:55:55,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:55:55,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:55:55,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:55:55,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:55:55,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:55:55,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:55:55,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:55:55,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:55:55,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:55:55,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:55:55,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:55:55,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:55:55,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:55:55,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:55:55,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:55:55,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:55:55,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:55:55,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:55:55,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:55:55,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:55:55,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:55:55,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:55:55,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:55:55,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:55:55,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:55:55,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:55:55,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:55:55,924 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:55:55,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-12-20 00:55:57,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:55:57,211 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:55:57,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-12-20 00:55:57,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105210a24/0a883d76b5b2455d98f7c392ea5b149f/FLAG59e546c24 [2023-12-20 00:55:57,232 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105210a24/0a883d76b5b2455d98f7c392ea5b149f [2023-12-20 00:55:57,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:55:57,241 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:55:57,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:55:57,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:55:57,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:55:57,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7412e0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57, skipping insertion in model container [2023-12-20 00:55:57,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:55:57,467 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2023-12-20 00:55:57,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:55:57,481 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:55:57,542 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2023-12-20 00:55:57,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:55:57,556 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:55:57,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57 WrapperNode [2023-12-20 00:55:57,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:55:57,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:55:57,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:55:57,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:55:57,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,612 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 943 [2023-12-20 00:55:57,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:55:57,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:55:57,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:55:57,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:55:57,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,661 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 00:55:57,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:55:57,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:55:57,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:55:57,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:55:57,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (1/1) ... [2023-12-20 00:55:57,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:55:57,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:55:57,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 00:55:57,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 00:55:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:55:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:55:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:55:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:55:57,875 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:55:57,877 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:55:58,603 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:55:58,660 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:55:58,661 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 00:55:58,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:55:58 BoogieIcfgContainer [2023-12-20 00:55:58,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:55:58,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:55:58,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:55:58,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:55:58,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:55:57" (1/3) ... [2023-12-20 00:55:58,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41340952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:55:58, skipping insertion in model container [2023-12-20 00:55:58,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:57" (2/3) ... [2023-12-20 00:55:58,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41340952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:55:58, skipping insertion in model container [2023-12-20 00:55:58,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:55:58" (3/3) ... [2023-12-20 00:55:58,666 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-12-20 00:55:58,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:55:58,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:55:58,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:55:58,729 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;@60f544d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:55:58,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:55:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.8398576512455516) internal successors, (517), 282 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 00:55:58,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:58,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:58,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:58,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1778473613, now seen corresponding path program 1 times [2023-12-20 00:55:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672998837] [2023-12-20 00:55:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:58,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:58,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672998837] [2023-12-20 00:55:58,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672998837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:58,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:58,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 00:55:58,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762989579] [2023-12-20 00:55:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 00:55:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 00:55:59,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:55:59,010 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.8398576512455516) internal successors, (517), 282 states have internal predecessors, (517), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:59,062 INFO L93 Difference]: Finished difference Result 375 states and 681 transitions. [2023-12-20 00:55:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 00:55:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 00:55:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:59,089 INFO L225 Difference]: With dead ends: 375 [2023-12-20 00:55:59,090 INFO L226 Difference]: Without dead ends: 281 [2023-12-20 00:55:59,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:55:59,096 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:59,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-20 00:55:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-20 00:55:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.8285714285714285) internal successors, (512), 280 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 512 transitions. [2023-12-20 00:55:59,152 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 512 transitions. Word has length 74 [2023-12-20 00:55:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:59,153 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 512 transitions. [2023-12-20 00:55:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 512 transitions. [2023-12-20 00:55:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 00:55:59,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:59,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:55:59,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:59,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 711055349, now seen corresponding path program 1 times [2023-12-20 00:55:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:59,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312006642] [2023-12-20 00:55:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312006642] [2023-12-20 00:55:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312006642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332314991] [2023-12-20 00:55:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:59,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:59,434 INFO L87 Difference]: Start difference. First operand 281 states and 512 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:59,512 INFO L93 Difference]: Finished difference Result 375 states and 675 transitions. [2023-12-20 00:55:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:59,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 00:55:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:59,515 INFO L225 Difference]: With dead ends: 375 [2023-12-20 00:55:59,515 INFO L226 Difference]: Without dead ends: 281 [2023-12-20 00:55:59,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:59,517 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:59,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1482 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:55:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-20 00:55:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-20 00:55:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.6785714285714286) internal successors, (470), 280 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 470 transitions. [2023-12-20 00:55:59,535 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 470 transitions. Word has length 74 [2023-12-20 00:55:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:59,536 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 470 transitions. [2023-12-20 00:55:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 470 transitions. [2023-12-20 00:55:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 00:55:59,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:59,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:59,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:55:59,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:59,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash 648159621, now seen corresponding path program 1 times [2023-12-20 00:55:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211603872] [2023-12-20 00:55:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:59,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211603872] [2023-12-20 00:55:59,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211603872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:59,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344044171] [2023-12-20 00:55:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:59,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:59,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:59,707 INFO L87 Difference]: Start difference. First operand 281 states and 470 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:59,740 INFO L93 Difference]: Finished difference Result 452 states and 769 transitions. [2023-12-20 00:55:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 00:55:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:59,743 INFO L225 Difference]: With dead ends: 452 [2023-12-20 00:55:59,743 INFO L226 Difference]: Without dead ends: 361 [2023-12-20 00:55:59,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:59,749 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 130 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:59,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 879 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-20 00:55:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 358. [2023-12-20 00:55:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6834733893557423) internal successors, (601), 357 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 601 transitions. [2023-12-20 00:55:59,758 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 601 transitions. Word has length 115 [2023-12-20 00:55:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:59,761 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 601 transitions. [2023-12-20 00:55:59,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 601 transitions. [2023-12-20 00:55:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 00:55:59,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:59,766 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] [2023-12-20 00:55:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:55:59,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:59,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1536040655, now seen corresponding path program 1 times [2023-12-20 00:55:59,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:59,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250297282] [2023-12-20 00:55:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:59,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250297282] [2023-12-20 00:55:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250297282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:59,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:59,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397204736] [2023-12-20 00:55:59,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:59,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:59,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:59,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:59,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:59,854 INFO L87 Difference]: Start difference. First operand 358 states and 601 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:59,897 INFO L93 Difference]: Finished difference Result 676 states and 1149 transitions. [2023-12-20 00:55:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-20 00:55:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:59,899 INFO L225 Difference]: With dead ends: 676 [2023-12-20 00:55:59,899 INFO L226 Difference]: Without dead ends: 508 [2023-12-20 00:55:59,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:59,900 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 131 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:59,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 891 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-20 00:55:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2023-12-20 00:55:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.6918489065606361) internal successors, (851), 503 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 851 transitions. [2023-12-20 00:55:59,910 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 851 transitions. Word has length 118 [2023-12-20 00:55:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:59,910 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 851 transitions. [2023-12-20 00:55:59,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 851 transitions. [2023-12-20 00:55:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:55:59,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:59,912 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] [2023-12-20 00:55:59,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:55:59,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:59,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1145213002, now seen corresponding path program 1 times [2023-12-20 00:55:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:59,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787247598] [2023-12-20 00:55:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:00,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787247598] [2023-12-20 00:56:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787247598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:00,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:00,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567378379] [2023-12-20 00:56:00,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:00,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:00,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:00,050 INFO L87 Difference]: Start difference. First operand 504 states and 851 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:00,073 INFO L93 Difference]: Finished difference Result 1096 states and 1865 transitions. [2023-12-20 00:56:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-20 00:56:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:00,077 INFO L225 Difference]: With dead ends: 1096 [2023-12-20 00:56:00,077 INFO L226 Difference]: Without dead ends: 782 [2023-12-20 00:56:00,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:00,079 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 124 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:00,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 892 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-20 00:56:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 776. [2023-12-20 00:56:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 1.6916129032258065) internal successors, (1311), 775 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1311 transitions. [2023-12-20 00:56:00,097 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1311 transitions. Word has length 121 [2023-12-20 00:56:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:00,098 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1311 transitions. [2023-12-20 00:56:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1311 transitions. [2023-12-20 00:56:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-20 00:56:00,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:00,099 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] [2023-12-20 00:56:00,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:56:00,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:00,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:00,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1127178636, now seen corresponding path program 1 times [2023-12-20 00:56:00,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:00,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059354752] [2023-12-20 00:56:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:00,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059354752] [2023-12-20 00:56:00,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059354752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:00,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:00,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501848173] [2023-12-20 00:56:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:00,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:00,188 INFO L87 Difference]: Start difference. First operand 776 states and 1311 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:00,219 INFO L93 Difference]: Finished difference Result 1876 states and 3177 transitions. [2023-12-20 00:56:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-20 00:56:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:00,224 INFO L225 Difference]: With dead ends: 1876 [2023-12-20 00:56:00,224 INFO L226 Difference]: Without dead ends: 1290 [2023-12-20 00:56:00,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:00,227 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 117 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:00,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 893 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-12-20 00:56:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1280. [2023-12-20 00:56:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.6817826426896012) internal successors, (2151), 1279 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2151 transitions. [2023-12-20 00:56:00,261 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2151 transitions. Word has length 124 [2023-12-20 00:56:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:00,262 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 2151 transitions. [2023-12-20 00:56:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2151 transitions. [2023-12-20 00:56:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-20 00:56:00,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:00,263 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] [2023-12-20 00:56:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:56:00,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:00,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1287551471, now seen corresponding path program 1 times [2023-12-20 00:56:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:00,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156513093] [2023-12-20 00:56:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156513093] [2023-12-20 00:56:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156513093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:00,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:56:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826392497] [2023-12-20 00:56:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:00,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:56:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:56:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:56:00,397 INFO L87 Difference]: Start difference. First operand 1280 states and 2151 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:00,623 INFO L93 Difference]: Finished difference Result 6440 states and 11003 transitions. [2023-12-20 00:56:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:56:00,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-20 00:56:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:00,638 INFO L225 Difference]: With dead ends: 6440 [2023-12-20 00:56:00,638 INFO L226 Difference]: Without dead ends: 5350 [2023-12-20 00:56:00,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:56:00,642 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1575 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:00,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3486 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:56:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2023-12-20 00:56:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 2293. [2023-12-20 00:56:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2292 states have (on average 1.6845549738219896) internal successors, (3861), 2292 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3861 transitions. [2023-12-20 00:56:00,706 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3861 transitions. Word has length 127 [2023-12-20 00:56:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:00,706 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 3861 transitions. [2023-12-20 00:56:00,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3861 transitions. [2023-12-20 00:56:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-20 00:56:00,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:00,708 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] [2023-12-20 00:56:00,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:56:00,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:00,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:00,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1327593618, now seen corresponding path program 1 times [2023-12-20 00:56:00,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:00,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662528855] [2023-12-20 00:56:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:00,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:00,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:00,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662528855] [2023-12-20 00:56:00,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662528855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:00,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:00,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:56:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140690645] [2023-12-20 00:56:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:00,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:56:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:56:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:56:00,817 INFO L87 Difference]: Start difference. First operand 2293 states and 3861 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:00,896 INFO L93 Difference]: Finished difference Result 6650 states and 11312 transitions. [2023-12-20 00:56:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:56:00,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-20 00:56:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:00,908 INFO L225 Difference]: With dead ends: 6650 [2023-12-20 00:56:00,908 INFO L226 Difference]: Without dead ends: 4547 [2023-12-20 00:56:00,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:56:00,911 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 453 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:00,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1392 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2023-12-20 00:56:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 3403. [2023-12-20 00:56:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 3402 states have (on average 1.6901822457378013) internal successors, (5750), 3402 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5750 transitions. [2023-12-20 00:56:01,021 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5750 transitions. Word has length 128 [2023-12-20 00:56:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:01,021 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 5750 transitions. [2023-12-20 00:56:01,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5750 transitions. [2023-12-20 00:56:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 00:56:01,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:01,023 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] [2023-12-20 00:56:01,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:56:01,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:01,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1731518874, now seen corresponding path program 1 times [2023-12-20 00:56:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137908845] [2023-12-20 00:56:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:01,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137908845] [2023-12-20 00:56:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137908845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:01,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:01,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:56:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122213321] [2023-12-20 00:56:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:56:01,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:56:01,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:56:01,119 INFO L87 Difference]: Start difference. First operand 3403 states and 5750 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:01,218 INFO L93 Difference]: Finished difference Result 9930 states and 16870 transitions. [2023-12-20 00:56:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:56:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-20 00:56:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:01,235 INFO L225 Difference]: With dead ends: 9930 [2023-12-20 00:56:01,235 INFO L226 Difference]: Without dead ends: 6717 [2023-12-20 00:56:01,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:56:01,242 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 453 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:01,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1412 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2023-12-20 00:56:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 5036. [2023-12-20 00:56:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 5035 states have (on average 1.6883813306852036) internal successors, (8501), 5035 states have internal predecessors, (8501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 8501 transitions. [2023-12-20 00:56:01,389 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 8501 transitions. Word has length 129 [2023-12-20 00:56:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:01,389 INFO L495 AbstractCegarLoop]: Abstraction has 5036 states and 8501 transitions. [2023-12-20 00:56:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 8501 transitions. [2023-12-20 00:56:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:56:01,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:01,392 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] [2023-12-20 00:56:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:56:01,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:01,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1445377878, now seen corresponding path program 1 times [2023-12-20 00:56:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:01,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404906918] [2023-12-20 00:56:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:01,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:01,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:01,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404906918] [2023-12-20 00:56:01,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404906918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:01,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:01,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:01,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416088842] [2023-12-20 00:56:01,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:01,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:01,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:01,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:01,453 INFO L87 Difference]: Start difference. First operand 5036 states and 8501 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:01,537 INFO L93 Difference]: Finished difference Result 11263 states and 19137 transitions. [2023-12-20 00:56:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-20 00:56:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:01,555 INFO L225 Difference]: With dead ends: 11263 [2023-12-20 00:56:01,555 INFO L226 Difference]: Without dead ends: 7793 [2023-12-20 00:56:01,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:01,561 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 137 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:01,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1033 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7793 states. [2023-12-20 00:56:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7793 to 7791. [2023-12-20 00:56:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 1.6851091142490373) internal successors, (13127), 7790 states have internal predecessors, (13127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 13127 transitions. [2023-12-20 00:56:01,701 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 13127 transitions. Word has length 130 [2023-12-20 00:56:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:01,702 INFO L495 AbstractCegarLoop]: Abstraction has 7791 states and 13127 transitions. [2023-12-20 00:56:01,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 13127 transitions. [2023-12-20 00:56:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:56:01,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:01,703 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] [2023-12-20 00:56:01,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:56:01,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:01,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2080177367, now seen corresponding path program 1 times [2023-12-20 00:56:01,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:01,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210247221] [2023-12-20 00:56:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:01,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210247221] [2023-12-20 00:56:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210247221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:01,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:01,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:56:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978661405] [2023-12-20 00:56:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:56:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:56:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:56:01,829 INFO L87 Difference]: Start difference. First operand 7791 states and 13127 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:02,114 INFO L93 Difference]: Finished difference Result 23156 states and 39212 transitions. [2023-12-20 00:56:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:56:02,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-20 00:56:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:02,155 INFO L225 Difference]: With dead ends: 23156 [2023-12-20 00:56:02,155 INFO L226 Difference]: Without dead ends: 15557 [2023-12-20 00:56:02,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:56:02,167 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 451 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:02,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1506 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:56:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15557 states. [2023-12-20 00:56:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15557 to 11618. [2023-12-20 00:56:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 1.6824481363518982) internal successors, (19545), 11617 states have internal predecessors, (19545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:02,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 19545 transitions. [2023-12-20 00:56:02,438 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 19545 transitions. Word has length 130 [2023-12-20 00:56:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:02,438 INFO L495 AbstractCegarLoop]: Abstraction has 11618 states and 19545 transitions. [2023-12-20 00:56:02,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 19545 transitions. [2023-12-20 00:56:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:56:02,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:02,441 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] [2023-12-20 00:56:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:56:02,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:02,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1116412873, now seen corresponding path program 1 times [2023-12-20 00:56:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382972996] [2023-12-20 00:56:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382972996] [2023-12-20 00:56:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382972996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560240327] [2023-12-20 00:56:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:02,531 INFO L87 Difference]: Start difference. First operand 11618 states and 19545 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:02,680 INFO L93 Difference]: Finished difference Result 23335 states and 39299 transitions. [2023-12-20 00:56:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-20 00:56:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:02,707 INFO L225 Difference]: With dead ends: 23335 [2023-12-20 00:56:02,707 INFO L226 Difference]: Without dead ends: 16815 [2023-12-20 00:56:02,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:02,720 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 116 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:02,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 975 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2023-12-20 00:56:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16813. [2023-12-20 00:56:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16813 states, 16812 states have (on average 1.671960504401618) internal successors, (28109), 16812 states have internal predecessors, (28109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16813 states to 16813 states and 28109 transitions. [2023-12-20 00:56:03,072 INFO L78 Accepts]: Start accepts. Automaton has 16813 states and 28109 transitions. Word has length 130 [2023-12-20 00:56:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:03,073 INFO L495 AbstractCegarLoop]: Abstraction has 16813 states and 28109 transitions. [2023-12-20 00:56:03,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 16813 states and 28109 transitions. [2023-12-20 00:56:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:56:03,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:03,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:56:03,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:56:03,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:03,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash 354488248, now seen corresponding path program 1 times [2023-12-20 00:56:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:03,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956291660] [2023-12-20 00:56:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:03,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956291660] [2023-12-20 00:56:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956291660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:03,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:03,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:03,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146273453] [2023-12-20 00:56:03,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:03,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:03,227 INFO L87 Difference]: Start difference. First operand 16813 states and 28109 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:03,553 INFO L93 Difference]: Finished difference Result 37415 states and 62637 transitions. [2023-12-20 00:56:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:03,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-20 00:56:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:03,591 INFO L225 Difference]: With dead ends: 37415 [2023-12-20 00:56:03,591 INFO L226 Difference]: Without dead ends: 25694 [2023-12-20 00:56:03,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:03,602 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 123 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:03,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1003 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25694 states. [2023-12-20 00:56:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25694 to 25692. [2023-12-20 00:56:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25692 states, 25691 states have (on average 1.6602312093729321) internal successors, (42653), 25691 states have internal predecessors, (42653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25692 states to 25692 states and 42653 transitions. [2023-12-20 00:56:04,173 INFO L78 Accepts]: Start accepts. Automaton has 25692 states and 42653 transitions. Word has length 130 [2023-12-20 00:56:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:04,173 INFO L495 AbstractCegarLoop]: Abstraction has 25692 states and 42653 transitions. [2023-12-20 00:56:04,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 25692 states and 42653 transitions. [2023-12-20 00:56:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:56:04,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:04,174 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] [2023-12-20 00:56:04,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:56:04,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:04,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:04,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1808950617, now seen corresponding path program 1 times [2023-12-20 00:56:04,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:04,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090220189] [2023-12-20 00:56:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:04,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:04,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:04,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090220189] [2023-12-20 00:56:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090220189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:04,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815561921] [2023-12-20 00:56:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:04,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:04,230 INFO L87 Difference]: Start difference. First operand 25692 states and 42653 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:04,709 INFO L93 Difference]: Finished difference Result 57237 states and 95088 transitions. [2023-12-20 00:56:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-20 00:56:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:04,775 INFO L225 Difference]: With dead ends: 57237 [2023-12-20 00:56:04,775 INFO L226 Difference]: Without dead ends: 39167 [2023-12-20 00:56:04,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:04,800 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 130 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:04,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1032 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39167 states. [2023-12-20 00:56:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39167 to 39165. [2023-12-20 00:56:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39165 states, 39164 states have (on average 1.6454396895107752) internal successors, (64442), 39164 states have internal predecessors, (64442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39165 states to 39165 states and 64442 transitions. [2023-12-20 00:56:05,561 INFO L78 Accepts]: Start accepts. Automaton has 39165 states and 64442 transitions. Word has length 130 [2023-12-20 00:56:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:05,561 INFO L495 AbstractCegarLoop]: Abstraction has 39165 states and 64442 transitions. [2023-12-20 00:56:05,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 39165 states and 64442 transitions. [2023-12-20 00:56:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:56:05,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:05,563 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] [2023-12-20 00:56:05,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:56:05,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:05,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 9140515, now seen corresponding path program 1 times [2023-12-20 00:56:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500133484] [2023-12-20 00:56:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:05,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500133484] [2023-12-20 00:56:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500133484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:05,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:05,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:56:05,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900785282] [2023-12-20 00:56:05,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:05,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:56:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:56:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:56:05,669 INFO L87 Difference]: Start difference. First operand 39165 states and 64442 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:06,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:06,670 INFO L93 Difference]: Finished difference Result 126905 states and 209400 transitions. [2023-12-20 00:56:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:56:06,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-20 00:56:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:06,851 INFO L225 Difference]: With dead ends: 126905 [2023-12-20 00:56:06,851 INFO L226 Difference]: Without dead ends: 87953 [2023-12-20 00:56:06,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:56:06,895 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 449 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:06,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1493 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87953 states. [2023-12-20 00:56:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87953 to 63334. [2023-12-20 00:56:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63334 states, 63333 states have (on average 1.638245464449813) internal successors, (103755), 63333 states have internal predecessors, (103755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63334 states to 63334 states and 103755 transitions. [2023-12-20 00:56:08,472 INFO L78 Accepts]: Start accepts. Automaton has 63334 states and 103755 transitions. Word has length 131 [2023-12-20 00:56:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:08,472 INFO L495 AbstractCegarLoop]: Abstraction has 63334 states and 103755 transitions. [2023-12-20 00:56:08,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 63334 states and 103755 transitions. [2023-12-20 00:56:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 00:56:08,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:08,473 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] [2023-12-20 00:56:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:56:08,474 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:08,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1283204917, now seen corresponding path program 1 times [2023-12-20 00:56:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703514104] [2023-12-20 00:56:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:08,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703514104] [2023-12-20 00:56:08,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703514104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:08,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:08,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:56:08,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69859152] [2023-12-20 00:56:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:56:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:56:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:56:08,818 INFO L87 Difference]: Start difference. First operand 63334 states and 103755 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:09,645 INFO L93 Difference]: Finished difference Result 126457 states and 207169 transitions. [2023-12-20 00:56:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:56:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-20 00:56:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:09,745 INFO L225 Difference]: With dead ends: 126457 [2023-12-20 00:56:09,745 INFO L226 Difference]: Without dead ends: 63336 [2023-12-20 00:56:09,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:56:09,785 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 121 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:09,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2203 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:56:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63336 states. [2023-12-20 00:56:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63336 to 63334. [2023-12-20 00:56:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63334 states, 63333 states have (on average 1.6283769914578499) internal successors, (103130), 63333 states have internal predecessors, (103130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63334 states to 63334 states and 103130 transitions. [2023-12-20 00:56:11,214 INFO L78 Accepts]: Start accepts. Automaton has 63334 states and 103130 transitions. Word has length 133 [2023-12-20 00:56:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:11,214 INFO L495 AbstractCegarLoop]: Abstraction has 63334 states and 103130 transitions. [2023-12-20 00:56:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 63334 states and 103130 transitions. [2023-12-20 00:56:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 00:56:11,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:11,215 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] [2023-12-20 00:56:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:56:11,216 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 49875956, now seen corresponding path program 1 times [2023-12-20 00:56:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900127278] [2023-12-20 00:56:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:11,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900127278] [2023-12-20 00:56:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900127278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:11,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:11,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:56:11,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90320610] [2023-12-20 00:56:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:11,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:56:11,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:11,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:56:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:56:11,621 INFO L87 Difference]: Start difference. First operand 63334 states and 103130 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:13,149 INFO L93 Difference]: Finished difference Result 185239 states and 302101 transitions. [2023-12-20 00:56:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:56:13,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-20 00:56:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:13,363 INFO L225 Difference]: With dead ends: 185239 [2023-12-20 00:56:13,363 INFO L226 Difference]: Without dead ends: 122118 [2023-12-20 00:56:13,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:56:13,418 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 235 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:13,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1779 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122118 states. [2023-12-20 00:56:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122118 to 122116. [2023-12-20 00:56:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122116 states, 122115 states have (on average 1.6156491831470334) internal successors, (197295), 122115 states have internal predecessors, (197295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122116 states to 122116 states and 197295 transitions. [2023-12-20 00:56:15,846 INFO L78 Accepts]: Start accepts. Automaton has 122116 states and 197295 transitions. Word has length 136 [2023-12-20 00:56:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:15,846 INFO L495 AbstractCegarLoop]: Abstraction has 122116 states and 197295 transitions. [2023-12-20 00:56:15,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 122116 states and 197295 transitions. [2023-12-20 00:56:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 00:56:15,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:15,847 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] [2023-12-20 00:56:15,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:56:15,848 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:15,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1531604546, now seen corresponding path program 1 times [2023-12-20 00:56:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:15,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814550010] [2023-12-20 00:56:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:16,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:16,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814550010] [2023-12-20 00:56:16,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814550010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:16,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:16,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:56:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787427397] [2023-12-20 00:56:16,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:16,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:56:16,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:56:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:56:16,287 INFO L87 Difference]: Start difference. First operand 122116 states and 197295 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:17,296 INFO L93 Difference]: Finished difference Result 127926 states and 205040 transitions. [2023-12-20 00:56:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:56:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-20 00:56:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:17,468 INFO L225 Difference]: With dead ends: 127926 [2023-12-20 00:56:17,468 INFO L226 Difference]: Without dead ends: 127924 [2023-12-20 00:56:17,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:56:17,496 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:17,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1384 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127924 states. [2023-12-20 00:56:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127924 to 125988. [2023-12-20 00:56:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125988 states, 125987 states have (on average 1.5965139260399883) internal successors, (201140), 125987 states have internal predecessors, (201140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125988 states to 125988 states and 201140 transitions. [2023-12-20 00:56:19,764 INFO L78 Accepts]: Start accepts. Automaton has 125988 states and 201140 transitions. Word has length 137 [2023-12-20 00:56:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:19,764 INFO L495 AbstractCegarLoop]: Abstraction has 125988 states and 201140 transitions. [2023-12-20 00:56:19,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 125988 states and 201140 transitions. [2023-12-20 00:56:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 00:56:19,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:19,767 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] [2023-12-20 00:56:19,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 00:56:19,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:19,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1296327942, now seen corresponding path program 1 times [2023-12-20 00:56:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593639120] [2023-12-20 00:56:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:56:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593639120] [2023-12-20 00:56:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593639120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:20,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:20,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:20,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635844846] [2023-12-20 00:56:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:20,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:20,020 INFO L87 Difference]: Start difference. First operand 125988 states and 201140 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:22,607 INFO L93 Difference]: Finished difference Result 376945 states and 601399 transitions. [2023-12-20 00:56:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:22,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-20 00:56:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:23,041 INFO L225 Difference]: With dead ends: 376945 [2023-12-20 00:56:23,041 INFO L226 Difference]: Without dead ends: 251015 [2023-12-20 00:56:23,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:23,106 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 348 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:23,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1178 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251015 states. [2023-12-20 00:56:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251015 to 251013. [2023-12-20 00:56:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251013 states, 251012 states have (on average 1.585991904769493) internal successors, (398103), 251012 states have internal predecessors, (398103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251013 states to 251013 states and 398103 transitions. [2023-12-20 00:56:28,041 INFO L78 Accepts]: Start accepts. Automaton has 251013 states and 398103 transitions. Word has length 173 [2023-12-20 00:56:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:28,044 INFO L495 AbstractCegarLoop]: Abstraction has 251013 states and 398103 transitions. [2023-12-20 00:56:28,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 251013 states and 398103 transitions. [2023-12-20 00:56:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 00:56:28,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:28,057 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] [2023-12-20 00:56:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 00:56:28,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:28,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 436848603, now seen corresponding path program 1 times [2023-12-20 00:56:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913988912] [2023-12-20 00:56:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:28,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-20 00:56:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913988912] [2023-12-20 00:56:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913988912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:28,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:28,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028348985] [2023-12-20 00:56:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:28,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:28,123 INFO L87 Difference]: Start difference. First operand 251013 states and 398103 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:33,252 INFO L93 Difference]: Finished difference Result 751103 states and 1190454 transitions. [2023-12-20 00:56:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:33,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 173 [2023-12-20 00:56:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:34,362 INFO L225 Difference]: With dead ends: 751103 [2023-12-20 00:56:34,362 INFO L226 Difference]: Without dead ends: 500152 [2023-12-20 00:56:34,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:34,598 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 350 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:34,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1182 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500152 states. [2023-12-20 00:56:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500152 to 500150. [2023-12-20 00:56:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500150 states, 500149 states have (on average 1.5754125270669341) internal successors, (787941), 500149 states have internal predecessors, (787941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500150 states to 500150 states and 787941 transitions. [2023-12-20 00:56:46,018 INFO L78 Accepts]: Start accepts. Automaton has 500150 states and 787941 transitions. Word has length 173 [2023-12-20 00:56:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:46,019 INFO L495 AbstractCegarLoop]: Abstraction has 500150 states and 787941 transitions. [2023-12-20 00:56:46,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 500150 states and 787941 transitions. [2023-12-20 00:56:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 00:56:46,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:46,031 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] [2023-12-20 00:56:46,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 00:56:46,031 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:46,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1907749724, now seen corresponding path program 1 times [2023-12-20 00:56:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412027663] [2023-12-20 00:56:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 00:56:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:46,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412027663] [2023-12-20 00:56:46,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412027663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363011839] [2023-12-20 00:56:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:46,250 INFO L87 Difference]: Start difference. First operand 500150 states and 787941 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:57,823 INFO L93 Difference]: Finished difference Result 1496584 states and 2356128 transitions. [2023-12-20 00:56:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:57,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 173 [2023-12-20 00:56:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:57:00,296 INFO L225 Difference]: With dead ends: 1496584 [2023-12-20 00:57:00,297 INFO L226 Difference]: Without dead ends: 996594 [2023-12-20 00:57:00,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:57:00,591 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 361 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:57:00,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1192 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:57:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996594 states. [2023-12-20 00:57:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996594 to 996592. [2023-12-20 00:57:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996592 states, 996591 states have (on average 1.5647642814354132) internal successors, (1559430), 996591 states have internal predecessors, (1559430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:57:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996592 states to 996592 states and 1559430 transitions. [2023-12-20 00:57:23,301 INFO L78 Accepts]: Start accepts. Automaton has 996592 states and 1559430 transitions. Word has length 173 [2023-12-20 00:57:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:57:23,302 INFO L495 AbstractCegarLoop]: Abstraction has 996592 states and 1559430 transitions. [2023-12-20 00:57:23,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:57:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 996592 states and 1559430 transitions. [2023-12-20 00:57:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 00:57:23,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:57:23,321 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] [2023-12-20 00:57:23,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 00:57:23,322 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:57:23,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:57:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash -932755203, now seen corresponding path program 1 times [2023-12-20 00:57:23,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:57:23,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913535213] [2023-12-20 00:57:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:57:23,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:57:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 00:57:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:57:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913535213] [2023-12-20 00:57:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913535213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:57:23,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:57:23,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:57:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821648012] [2023-12-20 00:57:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:57:23,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:57:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:57:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:57:23,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:57:23,404 INFO L87 Difference]: Start difference. First operand 996592 states and 1559430 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:57:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:57:47,784 INFO L93 Difference]: Finished difference Result 2982068 states and 4662944 transitions. [2023-12-20 00:57:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:57:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 173 [2023-12-20 00:57:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:57:54,719 INFO L225 Difference]: With dead ends: 2982068 [2023-12-20 00:57:54,719 INFO L226 Difference]: Without dead ends: 1985718 [2023-12-20 00:57:56,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:57:56,792 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 328 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:57:56,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1158 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:57:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985718 states.